Dominant parameters for the critical tunneling current in bilayer exciton condensates (2009)
Tiemann, L., Yoon, Y., Dietsche, W., Von Klitzing, K., Wegscheider, W.
We will discuss the relevant conditions to observe a critical tunneling current [New J. Phys. 10, 045018 (2008)] in electron double-layer systems at a total filling factor of 1 and find they are...
The nature of localization in graphene under quantum Hall conditions (2009)
Martin, J., Akerman, N., Ulbricht, G., Lohmann, T., Von Klitzing, K., Smet, J. H., ...
Particle localization is an essential ingredient in quantum Hall physics [1,2]. In conventional high mobility two-dimensional electron systems Coulomb interactions were shown to compete with disorder...
Dorozhkin, S. I., Pechenezhskiy, I. V., Pfeiffer, L. N., West, K. W., Umansky, V., Von Klitzing, K., ...
We observe in state-of-the-art GaAs based 2D electron systems microwave induced photo-current and photo-voltage oscillations around zero as a function of the applied magnetic field. The photo-signals...
Critical tunneling currents in the regime of bilayer excitons (2008)
Tiemann, L., Dietsche, W., Hauser, M., Von Klitzing, K.
We have investigated the tunneling properties of an electron double quantum well system where the lowest Landau level of each quantum well is half filled. This system is expected to be a Bose...
Exciton condensate at a total filling factor of 1 in Corbino 2D electron bilayers (2007)
Tiemann, L., Lok, J. G. S., Dietsche, W., Von Klitzing, K., Muraki, K., Schuh, D., ...
Magneto-transport and drag measurements on a quasi-Corbino 2D electron bilayer at the systems total filling factor 1 (v_tot=1) reveal a drag voltage that is equal in magnitude to the drive voltage as...
Observation of Electron-Hole Puddles in Graphene Using a Scanning Single Electron Transistor (2007)
Martin, J., Akerman, N., Ulbricht, G., Lohmann, T., Smet, J. H., Von Klitzing, K., ...
The electronic density of states of graphene is equivalent to that of relativistic electrons. In the absence of disorder or external doping the Fermi energy lies at the Dirac point where the density...
Dorozhkin, S. I., Smet, J. H., Von Klitzing, K., Pfeiffer, L. N., West, K. W.
The magnetoresistance oscillations, which occur in a two-dimensional electron system exposed to strong microwave radiation when the microwave frequency $\omega$ coincides with the n-th subharmonic of...
Kukushkin, I. V., Muravev, V. M., Smet, J. H., Hauser, M., Dietsche, W., Von Klitzing, K.
Transport and optical detection schemes are used for the investigation of resonant microwave absorption of two-dimensional electrons in stripes with different sizes. Fundamental and several excited...
Detection of the electron spin resonance of two-dimensional electrons at large wave vectors (2006)
Kukushkin, I. V., Smet, J. H., Abergel, D. S. L., Fal'ko, V. I., Wegscheider, W., Von Klitzing, K.
We have investigated the electron spin resonance at nonzero wave vector in GaAs single quantum wells by combining the virtues of high frequency surface acoustic wave generation to produce excitations...
Microwave response of two-dimensional electron rings (2006)
Kovalskii, V.A., Gubarev, S.I., Kukushkin, I.V., Mikhailov, S.A., Smet, J.H., Von Klitzing, K., ...
Smet, J. H., Gorshunoov, B., Jiang, C., Pfeiffer, L., West, K., Umansky, V., ...
We have investigated the influence of the polarization of the incident radiation on the recently discovered microwave-induced resistance oscillations in state-of-the-art highest purity 2D electron...
Wiersma, R. D., Lok, J. G. S., Dietsche, W., Von Klitzing, K., Schuh, D., Wegscheider, W.
We report on our experimental work involving the nu(T) = I exciton condensate in independently contacted bilayer two-dimensional electron systems. A phase diagram between the weakly coupled (nu(U) =...
Solov'ev, V. V., Kukushkin, I. V., Smet, J., Von Klitzing, K., Dietsche, W.
The recombination spectra of indirect excitons and double electron-hole layers in a wide single quantum well in an electric field are studied. It is found that electrons and holes in the wide well...
Solov'ev, V. V., Kukushkin, I. V., Smet, J. H., Von Klitzing, K., Dietsche, W.
The kinetics of the indirect recombination of electrons and holes in wide single quantum wells in a strong electric field has been analyzed. It has been shown that the recombination time increases...
Tunability of the Kondo effect in an asymmetrically tunnel coupled quantum dot (2006)
Quirion, D., Weis, J., Von Klitzing, K.
The transport properties of a single quantum dot were measured at low temperature in a regime of strong asymmetric tunnel coupling to leads. By tuning this asymmetry, the two parameters of the Kondo...
Khannanov, M. N., Koval'skii, V. A., Kukushkin, I. V., Gubarev, S. I., Smet, J. H., Von Klitzing, K.
The spectra of edge magnetoplasma excitations in two-dimensional (2D) electron disks have been analyzed by the method of optical detection of resonant microwave absorption. The magnetic dispersion of...
Investigations of the νT=1 exciton condensate (2006)
Wiersma, R. D., Lok, J. G. S., Tiemann, L., Dietsche, W., Von Klitzing, K., Schuh, D., ...
Recent experiments on quantum Hall bilayers in the vicinity of total filling factor 1 (nu(T) = 1) have revealed many exciting observations characteristic of a superfluidic exciton condensate. We...
Van'kov, A. B., Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Dickmann, S., Zhilin, V. M., ...
We report an inelastic light scattering study of the cyclotron spin-flip mode in the two-dimensional electron system at filling nu=1. The energy of this mode can serve as a probe of the many-body...
Smet, J. H., Gorshunov, B., Jiang, C., Pfeiffer, L., West, K., Umanksy, V., ...
The polarization dependence of the low field microwave photoconductivity and absorption of a two-dimensional electron system has been investigated in a quasi-optical setup in which linear and any...
Kulik, L. V., Kukushkin, I. V., Dickmann, S., Kirpichev, V. E., Van'kov, A. B., Parakhonsky, A. L., ...
The cyclotron spin-flip modes of spin unpolarized integer quantum Hall states ($\nu =2,4$) have been studied with inelastic light scattering. The energy of these modes is significantly smaller...
Miniature quantum-well microwave spectrometer operating at liquid-nitrogen temperatures (2005)
Kukushkin, I. V., Mikhailov, S. A., Smet, J. H., Von Klitzing, K.
Dipole excitations in a bilayer electron system in a parallel magnetic field (2005)
Kulik, L. V., Kukushkin, I. V., Tovstonog, S. V., Kirpichev, V. E., Bisti, V. E., Dietsche, W., ...
Experimental evidence for predicted magnetotransport anomalies in rectangular superlattices (2005)
Geisler, M. C., Chowdhury, S., Smet, J. H., Höppel, L., Umansky, V., Gerhardts, R. R., ...
Dorozhkin, P. S., Tovstonog, S. V., Mikhailov, S. A., Kukushkin, I. V., Smet, J. H., Von Klitzing, K.
Kulik, L. V., Kukushkin, I. V., Dickmann, S., Kirpichev, V. E., Van'kov, A. B., Parakhonsky, A. L., ...
Lebedev, M. V., Kukushkin, I. V., Parakhonskiĭ, A. L., Kirpichev, V. E., Volkov, O. V., Von Klitzing, K.
Spectrum of one-dimensional plasmons in a single stripe of two-dimensional electrons (2005)
Kukushkin, I. V., Smet, J. H., Kovalskii, V. A., Gubarev, S. I., Von Klitzing, K., Wegscheider, W.
Microwave photoresponse in the 2D electron system caused by intra-Landau level transitions (2004)
Dorozhkin, S. I., Smet, J. H., Umansky, V., Von Klitzing, K.
The influence of microwave radiation on the DC-magnetoresistance of 2D-electrons is studied in the regime beyond the recently discovered zero resistance states when the cyclotron frequency exceeds...
Activated Transport in the individual Layers that form the $\nu_T$=1 Exciton Condensate (2004)
Wiersma, R. D., Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schuh, D., ...
We observe the total filling factor $\nu_{T}$=1 quantum Hall state in a bilayer two-dimensional electron system with virtually no tunnelling. We find thermally activated transport in the balanced...
Kukushkin, I. V., Akimov, M. Y., Smet, J. H., Mikhailov, S. A., Von Klitzing, K., Aleiner, I. L., ...
We observe a new type of magneto-oscillations in the photovoltage and the longitudinal resistance of a two-dimensional electron system. The oscillations are induced by microwave radiation and are...
Collective excitations in double quantum wells with strong tunnel coupling (2004)
Tovstonog, S. V., Kulik, L. V., Kirpichev, V. E., Kukushkin, I. V., Dietsche, W., Von Klitzing, K.
Spectra of collective and magnetic excitations in symmetric double quantum wells with strong tunnel coupling were studied by inelastic scattering. Gaps in the spectrum of collective and...
Anomalous-filling-factor-dependent nuclear-spin polarization in a 2D electron system (2004)
Smet, J. H., Deutschmann, R. A., Ertl, F., Wegscheider, W., Abstreiter, G., Von Klitzing, K.
Spin-related electronic phase transitions in the fractional quantum Hall regime are accompanied by a large change in resistance. Combined with their sensitivity to spin orientation of nuclei residing...
Huels, J., Weis, J., Smet, J., Von Klitzing, K., Wasilewski, Z. R.
For investigating a two-dimensional electron system (2DES) in high magnetic fields and at temperatures below 0.1 K a single electron transistor (SET) is directly fabricated on top of a GaAs/AlGaAs...
Mani, R. G., Smet, J. H., Von Klitzing, K., Narayanamurti, V., Johnson, W. B., Umansky, V.
We examine the phase and the period of the radiation-induced oscillatory magnetoresistance in GaAs/AlGaAs devices utilizing in situ magnetic field calibration by electron spin resonance of...
Lok, J. G. S., Kraus, S., Stern, O., Dietsche, W., Von Klitzing, K., Wegscheider, W., ...
The spin unpolarised to spin polarised v = 2/3 phase transition is studied in narrow quantum wells. The phase transition is mapped in the filling factor (v), density (n)-plane and is well described...
Quantum Hall effect in a two-dimensional electron system bent by 90 degrees (2004)
Grayson, M., Schuh, D., Bichler, M., Huber, M., Abstreiter, G., Hoeppel, L., ...
Using a new MBE growth technique, we fabricate a two-dimensional electron system which is bent around an atomically sharp 90degrees corner. In the quantum Hall regime under tilted magnetic fields, we...
Quantum Hall ferromagnetism of AlAs 2D electrons (2004)
Lok, J. G. S., Lynass, M., Dietsche, W., Von Klitzing, K., Hauser, M.
We present magneto-transport measurements in tilted magnetic fields on high mobility (mu = 300.000 cm(2)/V s) AlAs two-dimensional electron systems. Our samples show integer and fractional quantum...
Kukushkin, I. V., Akimov, M. Y., Smet, J. H., Mikhailov, S. A., Von Klitzing, K., Aleiner, I. L., ...
We observe a new type of magneto-oscillations in the photovoltage and the longitudinal resistance of a two-dimensional electron system. The oscillations are induced by microwave radiation and are...
Detection of a Landau band-coupling-induced rearrangement of the Hofstadter butterfly (2004)
Geisler, M. C., Smet, J. H., Umansky, V., Von Klitzing, K., Naundorf, B., Ketzmerick, R., ...
The spectrum of 2D electrons subjected to a weak 2D potential and a perpendicular magnetic field is composed of Landau bands with a fractal internal pattern of subbands and minigaps referred to as...
Radiation-induced oscillatory Hall effect in high-mobility GaAs/AlxGa1-xAs devices (2004)
Mani, R. G., Narayanamurti, V., Von Klitzing, K., Smet, J. H., Johnson, W. B., Umansky, V.
We examine the radiation induced modification of the Hall effect in high-mobility GaAs/AlxGa1-xAs devices that exhibit vanishing resistance under microwave excitation. The modification in the Hall...
Mani, R. G., Smet, J. H., Von Klitzing, K., Narayanamurti, V., Johnson, W. B., Umansky, V.
We suggest an approach for characterizing the zero-field spin splitting of high mobility two-dimensional electron systems, when beats are not readily observable in the Shubnikov-de Haas effect. The...
Coulomb drag as a probe of the nature of compressible states in a magnetic field (2004)
Muraki, K., Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schuh, D., ...
Magnetodrag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At nu=3/2 clear T-4/3 dependence is observed, which signifies the metallic nature of...
Symmetry driven plasmon transformations in a bilayer electron system (2004)
Kulik, L. V., Tovstonog, S. V., Kirpichev, V. E., Kukushkin, I. V., Dietsche, W., Hauser, M., ...
Collective magnetoplasma excitations in two-dimensional electron rings (2004)
Gubarev, S. I., Koval'skiĭ, V. A., Kulakovskiĭ, D. V., Kukushkin, I. V., Khannanov, M. N., Smet, J., ...
Activated transport in the separate layers that form the νT=1 exciton condensate (2004)
Wiersma, R. D., Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schuh, D., ...
Detection of a Landau band-coupling-induced rearrangement of the Hofstadter butterfly (2004)
Geisler, M. C., Smet, J. H., Umansky, V., Von Klitzing, K., Naundorf, B., Ketzmerick, R., ...
Kukushkin, I. V., Akimov, M. Yu., Smet, J. H., Mikhailov, S. A., Von Klitzing, K., Aleiner, I. L., ...
We observe a new type of magneto-oscillations in the photovoltage and the longitudinal resistance of a two-dimensional electron system. The oscillations are induced by microwave irradiation and are...
Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field (2003)
Muraki, K., Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schuh, D., ...
Magneto-drag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At \nu=3/2 a clear T^{4/3} dependence is observed, which signifies the metallic...
Mani, R. G., Smet, J. H., Von Klitzing, K., Narayanamurti, V., Johnson, W. B., Umansky, V.
We examine the phase and the period of the radiation-induced oscillatory-magnetoresistance in GaAs/AlGaAs devices utilizing in-situ magnetic field calibration by Electron Spin Resonance of...
Radiation induced oscillatory Hall effect in high mobility GaAs/AlGaAs devices (2003)
Mani, R. G., Narayanamurti, V., Von Klitzing, K., Smet, J. H., Johnson, W. B., Umansky, V.
We examine the radiation induced modification of the Hall effect in high mobility GaAs/AlGaAs devices that exhibit vanishing resistance under microwave excitation. The modification in the Hall effect...
Quantum Hall Effect in a Two-Dimensional Electron System Bent by 90 Degrees (2003)
Grayson, M., Schuh, D., Bichler, M., Abstreiter, G., Hoeppel, L., Smet, J., ...
Using a new MBE growth technique, we fabricate a two-dimensional electron system which is bent around an atomically sharp 90 degree corner. In the quantum Hall regime under tilted magnetic fields, we...
Mani, R. G., Narayanamurti, V., Von Klitzing, K., Smet, J. H., Johnson, W. B., Umansky, V.
High mobility two-dimensional electron systems exhibit vanishing resistance over broad magnetic field intervals upon excitation with microwaves, with a characteristic reduction of the resistance with...
Magnetoresistive response of a high mobility 2DES under electromagnetic wave excitation (2003)
Mani, R G, Smet, J H, Von Klitzing, K, Narayanamurti, V, Johnson, W B, Umansky, V
Oscillations of the resistance observed under electromagnetic wave excitation in the high mobility GaAs/AlGaAs 2DES are examined as a function of the radiation frequency and the power, utilizing an...
Mani, R. G., Smet, J. H., Von Klitzing, K., Narayanamurti, V., Johnson, W. B., Umansky, V.
We suggest an approach for characterizing the zero-field spin splitting of high mobility two-dimensional electron systems, when beats are not readily observable in the Shubnikov-de Haas effect. The...
Gate-voltage control of spin interactions between electrons and nuclei in a semiconductor (2003)
Smet, J. H., Deutschmann, R. A., Ertl, F., Wegscheider, W., Abstreiter, G., Von Klitzing, K.
Semiconductors are ubiquitous in device electronics, because their charge distributions can be conveniently manipulated with applied voltages to perform logic operations, Achieving a similar level of...
Observation of retardation effects in the spectrum of two-dimensional plasmons (2003)
Kukushkin, I. V., Smet, J. H., Mikhailov, S. A., Kulakovskiĭ, D. V., Von Klitzing, K., Wegscheider, W.
Observation of plasmon-polariton modes in two-dimensional electron systems (2003)
Kukushkin, I. V., Kulakovskiĭ, D. V., Mikhailov, S. A., Smet, J. H., Von Klitzing, K.
Cyclotron resonance of composite fermions (2003)
Kukushkin, I. V., Smet, J. H., Von Klitzing, K., Wegscheider, W.
Cyclotron Resonance of Composite Fermions with Two and Four Flux Quanta (2003)
Kukushkin, I. V., Smet, J. H., Von Klitzing, K., Wegscheider, W.
Evidence of Hofstadter's Fractal Energy Spectrum in the Quantized Hall Conductance (2003)
Albrecht, C., Smet, J. H., Von Klitzing, K., Weiss, D., Umansky, V., Schweizer, H.
Magnetoresistive Response of a High Mobility 2DES under Electromagnetic Wave Excitation (2003)
Mani, R. G., Smet, J. H., Von Klitzing, K., Narayanamurti, V., Johnson, W. B., Umansky, V.
Low-Temperature Anomalies in Magneto-Drag at Higher Landau Levels (2003)
Muraki, K., Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schuh, D., ...
Elementary excitations in tunnel-coupled electron bilayers (2003)
Tovstonog, S. V., Kulik, L. V., Kirpichev, V. E., Kukushkin, I. V., Dietsche, W., Von Klitzing, K.
A new class of single-particle excitations in tunnel-coupled electron bilayers is investigated by inelastic light scattering. The dispersion law and the dependence of the energies of these...
Low-temperature anomalies in magneto-drag at higher Landau levels (2003)
Muraki, K., Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schuh, D., ...
NMR studies of the ν=2/3 phase transition (2003)
Stern, O., Freytag, N., Dietsche, W., Smet, J. H., Von Klitzing, K., Bichler, M., ...
Acoustical and optical magnetoplasma excitations in a bilayer electron system (2002)
Tovstonog, S. V., Kulik, L. V., Kukushkin, I. V., Chaplik, A. V., Smet, J. H., Von Klitzing, K., ...
The charge-density magnetoexcitations in the bilayer electron system have been studied by means of inelastic light-scattering spectroscopy. Two principal magnetoplasma excitations of different...
Kraus, S., Stern, O., Lok, J. G. S., Dietsche, W., Von Klitzing, K., Bichler, M., ...
We observe the transition from a spin-unpolarized to a polarized nu=2/3 fractional quantum Hall state at low currents (
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Tovstonog, S. V., Bisti, V. E., Von Klitzing, K., ...
The spectrum of collective excitations in a quasi-two- dimensional electron system was studied by the method of Raman scattering spectroscopy. In an applied magnetic field, such systems exhibit...
Mani, R. G., Smet, J. H., Von Klitzing, K., Narayanamurti, V., Johnson, W. B., Umansky, V.
The observation of vanishing electrical resistance in condensed matter has led to the discovery of new phenomena such as, for example, superconductivity, where a zero-resistance state can be detected...
Kukushkin, I. V., Smet, J. H., Fal'ko, V. I., Von Klitzing, K., Eberl, K.
We report on 1/B-periodic magnetoresistance oscillations in a two-dimensional electron system induced by microwave irradiation. They are only present in high mobility samples when an initial light...
Pseudomomentum of a dipole in a two-dimensional system (2002)
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Kulakovskiĭ, D. V., Von Klitzing, K., Eberl, K.
The energy of a two-dimensional neutral particle with a nonzero dipole moment aligned perpendicular to the two-dimensional plane is not controlled by its two-dimensional pseudomomentum, but is a...
Time scale of the excitation of electrons at the breakdown of the quantum Hall effect (2002)
Sagol, B. E., Nachtwei, G., Von Klitzing, K., Hein, G., Eberl, K.
We have investigated the time scale of the excitation of electrons leading to a transition from the quantum Hall (QH) state to the dissipative state in the two-dimensional electron systems of...
Wilhelm, U., Schmid, J., Weis, J., Von Klitzing, K.
The Kondo effect was originally observed in metals doped with magnetic impurities. Recent experiments demonstrated Kondo resonances in the electrical transport through quantum dot systems. They were...
Sagol, B. E., Nachtwei, G., Von Klitzing, K., Eberl, K.
We have investigated the time scale of the excitation of electrons from localized to delocalized states in two- dimensional electron gas systems of GaAs/AlGaAs heterostructures at the integer quantum...
Finite wavevector scattering on the ν=2/3 huge longitudinal resistance (2002)
Kraus, S., Lok, J. G. S., Dietsche, W., Von Klitzing, K., Wegscheider, W., Bichler, M.
We observe the huge longitudinal resistance (HLR) anomaly at filling factor 2/3 in a separately contacted, 15 nm wide double quantum well structure. With drag measurements we probe the interlayer...
Dorozhkin, S. I., Smet, J. H., Von Klitzing, K., Umansky, V., Wegscheider, W., Haug, R. J., ...
It is well-established that the electron-electron interaction strongly affects the compressibility of a two-dimensional electron system at zero magnetic field and even leads to the negative sign of...
Negative magneto-drag of double layer 2DEGs (2002)
Lok, J. G. S., Kraus, S., Dietsche, W., Von Klitzing, K., Schwerdt, F., Hauser, M., ...
We present friction measurements (drag) between two 2DEGs in a magnetic field in the integer quantum Hall regime. At matched densities, the double peak in the drag that occurs when the longitudinal...
Ahlswede, E., Weis, J., Von Klitzing, K., Eberl, K.
Scanning force microscope measurements of the Hall potential distribution of a two-dimensional electron system (2DES) in the quantum Hall regime reveal the presence of a partial depletion along the...
Cyclotron spin-flip excitations in the 2D-electron system (2002)
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Smet, J. H., Von Klitzing, K., Umansky, V., ...
The cyclotron spin-flip excitations of a two-dimensional electron system have been investigated by inelastic light scattering (ILS). At small electron filling factors, nu similar to 0.1, cyclotron...
Pohlt, M., Lynass, M., Lok, J. G. S., Dietsche, W., Von Klitzing, K., Eberl, K., ...
Separately contacted layers of a two-dimensional (2D) electron gas and a 2D hole gas have been prepared in GaAs, which are separated by AlGaAs barriers down to 15 nm thickness. The...
Cyclotron resonance of composite fermions (2002)
Kukushkin, I. V., Smet, J. H., Von Klitzing, K., Wegscheider, W.
It is occasionally possible to interpret strongly interacting many-body systems within a single-particle framework by introducing suitable fictitious entities, or 'quasi-particles'. A notable recent...
Gate-voltage control of spin interactions between electrons and nuclei in a semiconductor (2002)
Smet, J. H., Deutschmann, R. A., Ertl, F., Wegscheider, W., Abstreiter, G., Von Klitzing, K.
Semiconductors are ubiquitous in device electronics, because their charge distributions can be conveniently manipulated with voltages to perform logic operations. Achieving a similar level of control...
Diffusion-Controlled Picosecond Carrier Dynamics in ErAs:GaAs Superlattices (2002)
Griebel, M., Smet, J. H., Kuhl, J., Driscoll, D., Kadow, C., Von Klitzing, K., ...
Cyclotron resonance in a two-dimensional electron system with self-organized antidots (2001)
Suchalkin, S. D., Vasil'ev, Y. B., Zundel, M., Nachtwei, G., Von Klitzing, K., Eberl, K.
Experimental data are reported on studying cyclotron resonance in a two-dimensional electron system with an artificial random scattering potential generated by an array of self-organized AlInAs...
Hall potential profiles in the quantum Hall regime measured by a scanning force microscope (2001)
Ahlswede, E., Weitz, P., Weis, J., Von Klitzing, K., Eberl, K.
Evidence of Hofstadter's fractal energy spectrum in the quantized Hall conductance (2001)
Albrecht, C., Smet, J. H., Von Klitzing, K., Weiss, D., Umansky, V., Schweizer, H.
Picosecond carrier dynamics in ErAs:GaAs superlattices (2001)
Griebel, M., Smet, J. H., Kuhl, J., Von Klitzing, K., Driscoll, D., Kadow, C., ...
Collapse of the excitonic states at rs=8 in high quality GaAs/AlGaAs single quantum wells (2001)
Gubarev, S. I., Kukushkin, I. V., Tovstonog, S. V., Akimov, M. Y., Kulik, L. V., Smet, J. H., ...
Cyclotron spin-wave in the 2D electron system (2001)
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Smet, J. H., Von Klitzing, K., Umansky, V., ...
Spin-flip inelastic light scattering of excitations from partially filled Landau level (2001)
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Smet, J. H., Von Klitzing, K., Wegscheider, W.
Cyclotron spin-flip excitations in the extreme quantum limit (2001)
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Smet, J. H., Von Klitzing, K., Wegscheider, W.
Spin effects in the magnetodrag between double quantum wells (2001)
Lok, J. G. S., Kraus, S., Pohlt, M., Dietsche, W., Von Klitzing, K., Wegscheider, W., ...
Spin effects in the magneto drag (2001)
Lok, J. G. S., Kraus, S., Pohlt, M., Dietsche, W., Von Klitzing, K., Wegscheider, W., ...
Spin anomalies in the magneto-drag between double layer 2 DEGs (2001)
Lok, J. G. S., Kraus, S., Pohlt, M., Güven, K., Dietsche, W., Von Klitzing, K., ...
Space and Time-Resolved Measurements of Electronic Excitation in Quantum Hall Conductors (2001)
Sagol, B. E., Nachtwei, G., Kaya, I. I., Von Klitzing, K., Eberl, K.
Ising ferromagnetism and domain morphology in the fractional quantum Hall regime (2001)
Smet, J. H., Deutschmann, R. A., Wegscheider, W., Abstreiter, G., Von Klitzing, K.
Cyclotron resonance absorption of 2 DEG with embedded self-organized antidots (2001)
Vasil'ev, Y. B., Suchalkin, S. D., Zundel, M., Nachtwei, G., Von Klitzing, K., Eberl, K.
Cyclotron Resonance Absorption of 2DEG with Embedded Self-Organized Antidots (2001)
Vasilyev, Y. B., Suchalkin, S. D., Zundel, M., Nachtwei, G., Von Klitzing, K., Eberl, K.
Spin effects in the magneto-drag between double quantum wells (2000)
Lok, J. G. S., Kraus, S., Pohlt, M., Dietsche, W., Von Klitzing, K., Wegscheider, W., ...
We report on the selectivity to spin in a drag measurement. This selectivity to spin causes deep minima in the magneto-drag at odd fillingfactors for matched electron densities at magnetic fields and...
Dimensional magnetoplasma resonance of 2D holes in (001) GaAs/AlGaAs quantum wells (2000)
Akimov, M. Y., Kukushkin, I. V., Gubarev, S. I., Tovstonog, S. V., Smet, J. H., Von Klitzing, K., ...
Evidence of Hofstadter's fractal energy spectrum in the quantized Hall conductance (2000)
Albrecht, C., Smet, J. H., Von Klitzing, K., Weiss, D., Umansky, V., Schweizer, H.
Screening of excitonic states by low-density 2D charge carriers in GaAs/AlGaAs quantum wells (2000)
Gubarev, S. I., Kukushkin, I. V., Tovstonog, S. V., Akimov, M. Y., Smet, J. H., Von Klitzing, K., ...
Interaction between intersubband Bernstein modes and coupled plasmon-phonon modes (2000)
Kulik, L. V., Kukushkin, I. V., Kirpichev, V. E., Von Klitzing, K., Eberl, K.
Offset reduction in silicon Hall sensors (2000)
Müller-Schwanneke, C., Jost, F., Marx, K., Lindenkreuz, S., Von Klitzing, K.
In situ etching and regrowth in III-V molecular beam epitaxy for future nanotechnology (2000)
Schuler, H., Keller, M., Lipinski, M., Eberl, K., Weis, J., Von Klitzing, K.
Bistable charge states in a photoexcited quasi-two-dimensional electron-hole system (2000)
Volkov, O. V., Kukushkin, I. V., Kulakovskiĭ, D. V., Von Klitzing, K., Eberl, K.
Novel trion states in low-density 2D-hole system with complex valence band structure (2000)
Volkov, O. V., Pohlt, M., Kukushkin, I. V., Dietsche, W., Von Klitzing, K.
Hall-potential investigations under quantum Hall conditions using scanning force microscopy (2000)
Weitz, P., Ahlswede, E., Weis, J., Von Klitzing, K., Eberl, K.
Frictional Drag between Coupled 2D Hole Gases in GaAs/AlGaAs Heterostructures (2000)
Jörger, C., Cheng, S. J., Dietsche, W., Gerhardts, R., Specht, P., Eberl, K., ...
Frictional Drag Between Coupled 2D Hole Gases in GaAs/AlGaAs Heterostructures (1999)
Joerger, C., Cheng, S. J., Rubel, H., Dietsche, W., Gerhardts, R., Specht, P., ...
We report on the first measurements of the drag effect between coupled 2D-hole gases. We investigate the coupling by changing the carrier densities in the quantum wells, the widths of the barriers...
Fermiology of two-dimensional lateral superlattices. (1999)
Albrecht, C., Smet, J. H., Weiss, D., Von Klitzing, K., Hennig, R., Langenbuch, M., ...
Measurement of the magnetic breakdown field in coupled double quantum wells. (1999)
Gershoni, D., Harff, N. E., Palevski, A., Dietsche, W., Von Klitzing, K., Eberl, K.
Properties of two-dimensional electron gas containing self-organized quantum antidots. (1999)
Vasil'ev, Y., Suchalkin, S., Zundel, M., Heisenberg, D., Eberl, K., Von Klitzing, K.
Single-electron transistor probes two-dimensional electron system in the quantum Hall regime. (1999)
Frictional drag between coupled 2D hole gases in GaAs/AlGaAs heterostructures. (1999)
Jörger, C., Cheng, S. J., Dietsche, W., Gerhardts, R., Specht, P., Eberl, K., ...
Localization of negatively charged excitons in GaAs/AlGaAs quantum wells. (1999)
Volkov, O. V., Tovstonog, S. V., Kukushkin, I. V., Von Klitzing, K., Eberl, K.
Coupled quantum dots: manifestation of an artificial molecule. (1998)
Pfannkuche, D., Blick, R. H., Haug, R. J., Von Klitzing, K., Eberl, K.
Magnetic control of electric-field domains in semiconductor superlattices. (1998)
Schmidt, T., Jansen, A. G. M., Haug, R. J., Von Klitzing, K., Eberl, K.
High magnetic field far-infrared spectroscopy of spatially separated electron-hole layers. (1998)
Vasil'ev, Y. B., Suchalkin, S. D., Von Klitzing, K., Meltser, B. Y., Ivanov, S. V., Kop'ev, P. S.
Huge magnetoresistance oscillations in periodic magnetic fields. (1998)
Ye, P. D., Weiss, D., Gerhardts, R. R., Von Klitzing, K., Tarucha, S.
Multilayered Langmuir-Blodgett films of thiol-substituted ultrasmall gold clusters. (1998)
Burghard, M., Philipp, G., Roth, S., Von Klitzing, K., Pugin, R., Schmid, G.
New resistance maxima in the fractional quantum Hall effect regime. (1998)
Kronmüller, S., Dietsche, W., Weis, J., Von Klitzing, K., Wegscheider, W., Bichler, M.
The frictional drag between coupled two-dimensional electronic systems in magnetic fields. (1998)
Rubel, H., Fischer, A., Dietsche, W., Jörger, C., Von Klitzing, K., Eberl, K.
Critical currents in quantum Hall conductors with antidot arrays. (1998)
Nachtwei, G., Liu, Z., Lütjering, G., Gerhardts, R. R., Weiss, D., Von Klitzing, K., ...
Composite fermions in magnetic focusing and commensurability experiments. (1998)
Smet, J. H., Weiss, D., Von Klitzing, K., Fleischmann, R., Ketzmerick, R., Geisel, T., ...
Electron-spin resonance in a quantum dot. (1998)
Blick, R. H., Gudmundsson, V., Haug, R. J., Von Klitzing, K., Eberl, K.
QHE breakdown induced by a single antidot: Coulomb staircase in the breakdown current. (1998)
Liu, Z. H., Nachtwei, G., Weis, J., Von Klitzing, K., Eberl, K.
New resistance maxima of the 2DEG at fractional filling factors. (1998)
Kronmüller, S., Dietsche, W., Von Klitzing, K., Wegscheider, W., Bichler, M.
Novel magneto-resistance oscillations in short period lateral superlattices. (1998)
Albrecht, C., Smet, J. H., Weiss, D., Von Klitzing, K., Umansky, V., Schweizer, H.
Formation of a coherent mode in a double quantum dot. (1998)
Blick, R. H., Pfannkuche, D., Haug, R. J., Von Klitzing, K., Eberl, K.
Probing the coherent transport through coupled quantum dots. (1998)
Blick, R. H., Van Der Weide, D. W., Haug, R. J., Von Klitzing, K., Eberl, K.
Composite fermions in periodic and random antidot lattices (1997)
Smet, J. H., Weiss, D., Von Klitzing, K., Coleridge, P. T., Wasilewski, Z. W., Bergmann, R., ...
The longitudinal and Hall magnetoresistance of random and periodic arrays of artificial scatterers, imposed on a high-mobility two-dimensional electron gas, were investigated in the vicinity of...
Electron pinball and commensurate orbits in a periodic array of scatterers (1991)
Weiss, D., Roukes, M. L., Menschig, A., Grambow, P., Von Klitzing, K., Weimann, G.
We have introduced an artificial array of scatterers into a macroscopic two-dimensional conductor nearly devoid of intrinsic defects. This generates pronounced structure in the magnetoresistance,...