Structure Improvement by X-Ray (2009)
K. Brunner, W. Gronwald, A. Fischer, J. Trenner, H. R. Kalbitzer, ...
published in
Lateral magnetic anisotropy superlattice out of a single (Ga,Mn)As layer (2009)
Dengel, R. G., Gould, C., Wenisch, J., Brunner, K., Schmidt, G., Molenkamp, L. W.
We use lithographically induced strain relaxation to periodically modulate the magnetic anisotropy in a single (Ga,Mn)As layer. This results in a lateral magnetoresistance device where two...
Independent magnetization behavior of a ferromagnetic metal/semiconductor hybrid system (2008)
Mark, S., Gould, C., Pappert, K., Wenisch, J., Brunner, K., Schmidt, G., ...
We report the discovery of an effect where two ferromagnetic materials, one semiconductor ((Ga,Mn)As) and one metal (permalloy), can be directly deposited on each other and still switch their...
Non-thermal photocoercivity effect in a ferromagnetic semiconductor (2008)
Astakhov, G. V., Hoffmann, H., Korenev, V. L., Kiessling, T., Schwittek, J., Schott, G. M., ...
We report a photoinduced change of the coercive field, i.e., a photocoercivity effect (PCE), under very low intensity illumination of a low-doped (Ga,Mn)As ferromagnetic semiconductor. We find a...
Detailed transport investigation of the magnetic anisotropy of (Ga,Mn)As (2008)
Pappert, K., Gould, C., Sawicki, M., Wenisch, J., Brunner, K., Schmidt, G., ...
This paper discusses transport methods for the investigation of the (Ga,Mn)As magnetic anisotropy. Typical magnetoresistance behaviour for different anisotropy types is discussed, focusing on an in...
An extensive comparison of anisotropies in MBE grown (Ga,Mn)As material (2008)
Gould, C., Mark, S., Pappert, K., Dengel, G., Wenisch, J., Campion, R. P., ...
This paper reports on a detailed magnetotransport investigation of the magnetic anisotropies of (Ga,Mn)As layers produced by various sources worldwide. Using anisotropy fingerprints to identify...
B. Schmid, A. Müller, M. Sing, R. Claessen, J. Wenisch, ...
Journal article
Exploiting Locally Imposed Anisotropies in (Ga,Mn)As: a Non-volatile Memory Device (2007)
Pappert, K., Hümpfner, S., Gould, C., Wenisch, J., Brunner, K., Schmidt, G., ...
Progress in (Ga,Mn)As lithography has recently allowed us to realize structures where unique magnetic anisotropy properties can be imposed locally in various regions of a given device. We make use of...
Control of magnetic anisotropy in (Ga,Mn)As by lithography-induced strain relaxation (2007)
Wenisch, J., Gould, C., Ebel, L., Storz, J., Pappert, K., Schmidt, M. J., ...
We obtain control of magnetic anisotropy in epitaxial (Ga,Mn)As by anisotropic strain relaxation in patterned structures. The strain in the structures is characterized using sophisticated X-ray...
Structure and relaxation effects in thin semiconducting films and quantum dots (2007)
C. Kumpf, A. Stahl, I. Gierz, C. Schumacher, S. Mahapatra, ...
Journal article
Control of magnetic anisotropy in (Ga,Mn)As by lithography-induced strain relaxation (2007)
J. Wenisch, C. Gould, L. Ebel, J. Storz, K. Pappert, ...
Journal article
Lithographic engineering of anisotropies in (Ga,Mn)As (2006)
Hümpfner, S., Sawicki, M., Pappert, K., Wenisch, J., Brunner, K., Gould, C., ...
The focus of studies on ferromagnetic semiconductors is moving from material issues to device functionalities based on novel phenomena often associated with the anisotropy properties of these...
Transport Characterization of the Magnetic Anisotropy of (Ga,Mn)As (2006)
Pappert, K., Hümpfner, S., Wenisch, J., Brunner, K., Gould, C., Schmidt, G., ...
The rich magnetic anisotropy of compressively strained (Ga,Mn)As has attracted great interest recently. Here we discuss a sensitive method to visualize and quantify the individual components of the...
Magnetization-Switched Metal-Insulator Transition in a (Ga,Mn)As Tunnel Device (2006)
Pappert, K., Schmidt, M. J., Hümpfner, S., Rüster, C., Schott, G. M., Brunner, K., ...
We observe the occurrence of an Efros-Shklovskii gap in (Ga,Mn)As based tunnel junctions. The occurrence of the gap is controlled by the extent of the hole wave-function on the Mn acceptor atoms....
Current Assisted Magnetization Switching in (Ga,Mn)As Nanodevices (2006)
Gould, C., Pappert, K., Rüster, C., Giraud*, R., Borzenko, T., Schott, G. M., ...
Current induced magnetization switching and resistance associated with domain walls pinned in nanoconstrictions have both been previously reported in (Ga,Mn)As based devices, but using very...
Anomalous in-plane magneto-optical anisotropy of self-assembled quantum dots (2006)
Kiessling, T., Platonov, A. V., Astakhov, G. V., Slobodskyy, T., Mahapatra, S., Ossau, W., ...
We report on a complex nontrivial behavior of the optical anisotropy of quantum dots that is induced by a magnetic field in the plane of the sample. We find that the optical axis either rotates in...
NMR in the SPINE structural proteomics project (2006)
Ab, E., Atkinson, A., Banci, L., Bertini, I., Ciofi-baffoni, S., Brunner, K., ...
NMR in the SPINE Structural Proteomics project (2006)
AB, E., Atkinson, A.R., Banci, L., Bertini, I., Ciofi-Baffoni, S., Brunner, K., ...
Quantum-dot-based optical polarization conversion (2005)
Astakhov, G. V., Kiessling, T., Platonov, A. V., Slobodskyy, T., Mahapatra, S., Ossau, W., ...
We report circular-to-linear and linear-to-circular conversion of optical polarization by semiconductor quantum dots. The polarization conversion occurs under continuous wave excitation in absence of...
Rader,O., Fauth,K., Gould,C., Rüster,C., Schott,G. M., Schmidt,G., ...
1500-fold Tunneling Anisotropic Magnetoresistance in a (Ga,Mn)As stack (2004)
Rüster, C., Gould, C., Jungwirth, T., Sinova, J., Schott, G. M., Giraud, R., ...
We report the discovery of a super-giant tunneling anisotropic magnetoresistance in an epitaxially grown (Ga,Mn)As/GaAs/(Ga,Mn)As structure. The effect arises from a strong dependence of the...
Gould, C., Rüster, C., Jungwirth, T., Girgis, E., Schott, G. M., Giraud, R., ...
We introduce a new class of spintronics devices in which a spin-valve like effect results from strong spin-orbit coupling in a single ferromagnetic layer rather than from injection and detection of a...
Electroluminescent metal complexes (2004)
Cola, L. De, Welter, S., Plummer, E., Hofstraat, J.W., Brunner, K.
Electroluminescent metal complexes (2004)
Cola, L. De, Welter, S., Plummer, E., Hofstraat, J.W., Brunner, K.
Light-emitting electrochemical cells for large-area lighting applications (2004)
Wegh, R.T., Meijer, E.J., Plummer, E.A., Cola, L. De, Brunner, K., Dijken, A. Van, ...
The new AUREMOL program. Automation of protein structure elucidation. (2004)
Gronwald, W., Brunner, K., Kirchhöfer, R., Nasser, A., Trenner, J., Ganslmeier, B., ...
Dolgopolov, V. T., Deviatov, E. V., Shashkin, A. A., Wieser, U., Kunze, U., Abstreiter, G., ...
The small, about 30% magnetoresistance at the onset of full spin polarization in the 2D electron system in a modulation-doped Si/SiGe quantum well gives evidence that it is the remote doping that...
Hulea, I. N., Brom, H. B., Van Dijken, A., Brunner, K.
Dye doping is a promising way to increase the spectral purity of polymer light-emitting diodes (LEDs). Here we analyze the frequency and field dependence of the complex admittance of...
Spin-photocurrent in p-SiGe quantum wells under terahertz laser irradiation (2003)
Belkov, Vassilij, Ganichev, Sergey, Schneider, Petra, Schowalter, D., Rössler, Ulrich, Prettl, Wilhelm, ...
A detailed study of the circular photogalvanic effect (CPGE) in SiGe structures is presented. It is shown that the CPGE becomes possible because of the built-in asymmetry of quantum wells (QWs) in...
Spin-photocurrent in p-SiGe quantum wells under terahertz laser irradiation (2003)
Bel'kov, V. V., Ganichev, S. D., Schneider, Petra, Schowalter, D., Roessler, U., Prettl, W., ...
A detailed study of the circular photogalvanic effect (CPGE) in SiGe structures is presented. It is shown that the CPGE becomes possible due to the built-in asymmetry of quantum wells (QWs) in...
Brunner, K, ...
By means of fluorescence single molecule spectroscopy, it is shown that the conformation of high molecular weight conjugated polymers in thin films depends on the nature (chemical composition and...
Spin-Photocurrent in p-SiGe quantum wells under terahertz laser irradiation (2003)
Belkov, Vassilij, Ganichev, Sergey, Schneider, Petra, Schowalter, D., Rössler, Ulrich, Prettl, Wilhelm, ...
A detailed study of the circular photogalvanic effect (CPGE) in SiGe structures is presented. It is shown that the CPGE becomes possible because of the built-in asymmetry of quantum wells (QWs) in...
Removal of spin-degenerancy in p-SiGe quantum wells demonstrated by spin-photocurrents (2002)
Ganichev, Sergey, Rössler, Ulrich, Prettl, Wilhelm, Ivchenko, E., Belkov, Vassilij, Neumann, Richard, ...
Spin photocurrents requiring a system lacking inversion symmetry, become possible in SiGe based quantum well (QW) structures due to their built-in asymmetry. We report on circular and linear...
Removal of spin degeneracy in SiGe-based nanostructures (2002)
Ganichev, Sergey, Rössler, Ulrich, Prettl, Wilhelm, Ivchenko, Eougenious, Belkov, Vassilij, Neumann, Richard, ...
The photogalvanic effects, which require a system lacking inversion symmetry, become possible in SiGe based quantum well (QW) structures due to their built-in asymmetry. We report on the removal of...
Wetland Plants of the Pacific Northwest. (2002)
Weinmann,F., Boule,M., Brunner,K., Malek,J., Yoshino,V.
Fifty-nine species of wetland plants are described and illustrated with color photographs. These wetland species occur in eelgrass beds, low salt/brackish marshes, high salt/brackish marshes, deep...
Removal of spin degeneracy in SiGe based nanostructures (2002)
Ganichev, Sergey, Rössler, Ulrich, Prettl, Wilhelm, Ivchenko, Eougenious, Belkov, Vassilij, Neumann, Richard, ...
Photogalvanischer Effekt in Si/Ge-Quantentrögen (2002)
Sollinger, M., Ganichev, Sergey, Kalz, Franz-Peter, Rössler, Ulrich, Prettl, Wilhelm, Ivchenko, Eougenious, ...
In Si/Ge Quantentrogstrukturen wurden der lineare und der zirkulare photogalvanische Effekt beobachtet. Beide Effekte treten bei Infrarotbestrahlung von (001)- und (113)-orientierten p-Si/Si1-xGex...
Ge-Si nanostructures for quantum-effect electronic devices (2001)
Ernst,F., Kienzle,O., Schmidt,O. G., Eberl,K., Zhu,J., Brunner,K., ...
Self-ordering of Ge islands on Si substrates mediated by local strain fields (2001)
Brunner, K., Zhu, J., Abstreiter, G., Kienzle, O., Ernst, F.
Ge-Si nanostructures for quantum-effect electronic devices (2001)
Ernst, F., Kienzle, O., Schmidt, O. G., Eberl, K., Zhu, J., Brunner, K., ...
Removal of spin degeneracy in SiGe based nanostructures (2001)
Ganichev, Sergey, Rössler, Ulrich, Prettl, Wilhelm, Ivchenko, Eougenious, Belkov, Vassilij, Neumann, Richard, ...
Circular photogalvanic effect in Si/Ge semiconductor quantum wells (2001)
Ganichev, Sergey, Kalz, Franz-Peter, Prettl, Wilhelm, Neumann, Richard, Brunner, K., Abstreiter, Gerhard, ...
Self-organized periodic arrays of SiGe wires and Ge islands on vicinal Si substrates (2000)
Brunner,K., Zhu,J., Miesner,C., Abstreiter,G., Kienzle,O., Ernst,F.
High-pressure photoluminescence studies of pseudomorphic Si1-yCy/Si MQW structures (2000)
Liu, Z. X., Goñi, A. R., Manz, C., Syassen, K., Brunner, K., Eberl, K.
Step bunching an correlated SiGe nanostructures on Si(113) (2000)
Brunner, K., Zhu, J., Abstreiter, G., Kienzle, O., Ernst, F.
Self-organized periodic arrays of SiGe wires and Ge islands on vicinal Si substrates (2000)
Brunner, K., Zhu, J., Miesner, C., Abstreiter, G., Kienzle, O., Ernst, F.
SiGeC: Band gaps, band offsets, optical properties, and potential applications. (1998)
Brunner, K., Schmidt, O. G., Winter, W., Eberl, K., Gluck, M., König, U.
The International (Ludwig) Breast Cancer Study Group Trials I-IV: 15 years follow-up (1994)
Castiglione-Gertsch, M., Johnsen, C., Goldhirsch, A., Gelber, R. D., Rudenstam, C. M., Collins, J., ...
Background Adjuvant systemic therapy prolongs disease-free and overall survival in both pre- and postmenopausal patients. Available data shown benefit from multi-agent chemotherapy, prolonged...
Photoluminescence from GaAs/AlGaAs quantum wires and quantum dots (1993)
Brunner, K., Bockelmann, U., Abstreiter, G., Walther, M., BÖhm, G., TrÄnkle, G., ...
Quantum wires and dots have been fabricated by local interdiffusion of undoped GaAs/AlGaAs quantum well structures. Thermal interdiffusion is induced by a focused laser beam. In periodic arrays of...
Photoluminescence from GaAs/AlGaAs quantum wires and quantum dots (1993)
Brunner, K., Bockelmann, U., Abstreiter, G., Walther, M., BÖhm, G., TrÄnkle, G., ...
Quantum wires and dots have been fabricated by local interdiffusion of undoped GaAs/AlGaAs quantum well structures. Thermal interdiffusion is induced by a focused laser beam. In periodic arrays of...
Photoluminescence from GaAs/AlGaAs quantum wires and quantum dots (1993)
Brunner, K., Bockelmann, U., Abstreiter, G., Walther, M., BÖhm, G., TrÄnkle, G., ...
Quantum wires and dots have been fabricated by local interdiffusion of undoped GaAs/AlGaAs quantum well structures. Thermal interdiffusion is induced by a focused laser beam. In periodic arrays of...
Castiglione-Gertsch, M., Pampallona, S., Varini, M., Cavalli, F., Brunner, K., Senn, H. J., ...
Background: The availability of compounds effective against metastatic disease and at the same time excellently tolerated even in long-term administration has determined the choice of tamoxifen as...
Hürny, C., Bernhard, J., Joss, R., Willems, Y., Cavalli, F., Kiser, J., ...
Between 1985 and 1990 the Swiss Group for Clinical Cancer Research (SAKK) for the first time assessed quality of life (QL) variables in 188 patients in a multicenter small-cell lung cancer trial that...
Borner, M., Castiglione, M., Triller, J., Baer, H. U., Soucek, M., Blumgart, L., ...
The feasibility of one whole liver chemoembolization (CE) procedure with Angjostat, a vasoocclusive collagen, mitomycin, doxorubicin, and cisplatin was evaluated in eight patients with unresectable...
Borner, M., Laffer, U., Ludwig, C., Obrist, R., Metzger, U., Aeberhard, P., ...
The usefulness of hepatic artery infusion (HAI) with floxuridine is limited by the severe biliary and hepatic toxicity of floxuridine. This prompted the SAKK to evaluate the effectiveness, toxicity...
Measuring the severity of unemployment
social welfare, stochastic dominance, hardship of unemployment, D63, J60,