P. Pavone, S. Baroni, Solid State Commun, J. C. Noya, C. P. Herrero, ...
11. The epitaxial film of the highly enriched 76 Ge isotope (average mass 75.63) was grown on an intrinsic Ge(111) substrate in an ultrahigh vacuum system (base pressure 10 �11 mbar) by molecular...
Cardona, M., Kremer, R. K., Lauck, R., Siegle, G., Munoz, A., Romero, A. H.
We report ab initio calculations of the electronic band structure and the phonon dispersion relations of the zincblende-type mercury chalcogenides (beta-HgS, HgSe, and HgTe). The latter have been...
Bakr, M., Schnyder, A. P., Klam, L., Manske, D., Lin, C. T., Keimer, B., ...
Inelastic light (Raman) scattering has been used to study electronic excitations and phonon anomalies in detwinned, slightly overdoped YBa$_2$Cu$_3$O$_{6.95}$ and moderately overdoped...
Lattice Dynamics and Specific Heat of $\alpha$ - GeTe: a theoretical and experimental study (2008)
Shaltaf, R., Gonze, X., Cardona, M., Kremer, R. K., Siegle, G.
We extend recent \textit{ab initio} calculations of the electronic band structure and the phonon dispersion relations of rhombohedral GeTe to calculations of the density of phonon states and the...
We have calculated the spin--orbit splittings of the top valence bands of AlN, GaN and InN crystallized in the zinc blende structure, using the LMTO--LDA method. Because of the large differences in...
Alawadhi, H., Tsoi, S., Lu, X., Ramdas, A. K., Grimsditch, M., Cardona, M., ...
The temperature dependence of the A, B, and C excitons of ZnO, observed in modulated reflectivity spectra of (ZnO)-Zn-68-O-18 and (ZnO)-Zn-nat-O-nat in the range 10-400 K, reveal the superposition of...
Isotopic-mass dependence of the A, B, and C excitonic band gaps in ZnO at low temperatures (2006)
Tsoi, S., Lu, X., Ramdas, A. K., Alawadhi, H., Grimsditch, M., Cardona, M., ...
Low temperature wavelength-modulated reflectivity measurements of isotopically engineered ZnO samples have yielded the dependence of their A, B, and C excitonic band gaps on the isotopic masses of Zn...
Lastras-Martínez, L. F., Flores-Camacho, J. M., Lastras-Martínez, A., Balderas-Navarro, R. E., Cardona, M.
We report photoreflectance-difference and reflectance-difference measurements on reconstructed GaAs (001) surfaces. From these data the linear and quadratic electro-optic coefficient spectra are...
Heat capacity of ZnO: Isotope effects (2006)
Serrano, J., Kremer, R. K., Cardona, M., Siegle, G., Romero, A. H., Lauck, R.
We have measured the heat capacity of zinc oxide for several single crystals with different isotopic compositions in the 5-350 K temperature range. We have performed first-principles calculations in...
Isotopic-mass dependence of the A, B, and C excitonic band gaps in ZnO at low temperatures (2006)
Tsoi, S., Lu, X., Ramdas, A. K., Alawadhi, H., Grimsditch, M., Cardona, M., ...
Low temperature wavelength-modulated reflectivity measurements of isotopically engineered ZnO samples have yielded the dependence of their A, B, and C excitonic band gaps on the isotopic masses of Zn...
Trajnerowicz, A., Golnik, A., Bernhard, C., Machtoub, L., Ulrich, C., Tallon, J. L., ...
The phonon spectra of YBa2Cu4O8 polycrystalline samples with different isotope substitution for Ba, Cu, and O have been studied using far-infrared ellipsometry and Raman scattering. The observed...
La sociedad Max Planck como modelo de organizacíon para el fomento de la investigación básica (2006)
Long-lived optical phonons in ZnO studied with impulsive stimulated Raman scattering (2005)
Aku-Leh, C., Zhao, J., Merlin, R., Menéndez, J., Cardona, M.
Heat capacity of α-GaN: Isotope effects (2005)
Kremer, R. K., Cardona, M., Schmitt, E., Blumm, J., Estreicher, S. K., Sanati, M., ...
VUV-ellipsometry on GaN: Probing conduction band properties by core level excitations (2005)
Esser, N., Rakel, M., Cobet, C., Schmidt, W. G., Braun, W., Cardona, M.
Intoxicación grave por bisoprolol: necesidad de un tratamiento multidireccional (2005)
E. Montori, M. Cardona, S. Nogué
Una mujer de 89 años fue hallada en su domicilio en coma, bradicárdica e hipotensa, tras la ingesta de bisoprolol y lorazepam en una tentativa de suicidio. Al administrar flumazenilo se obtuvo una...
Long-lived optical phonons in ZnO studied with impulsive stimulated Raman scattering (2004)
Aku-Leh, C., Zhao, J., Merlin, R., Menendez, J., Cardona, M.
The anharmonic properties of the low-frequency E2 phonon in ZnO were measured using impulsive stimulated Raman scattering. At 5 K, the frequency and lifetime are (2.9787 +/- 0.0002) THz and (211 +/-...
Impurity Absorption Spectroscopy in 28Si: The Importance on Inhomogeneous Isotope Broadening (2003)
Karaiskaj, D., Stotz, J. A. H., Meyer, T., Thewalt, M. L. W., Cardona, M.
Bernhard, C., Holden, T., Humlicek, J., Munzar, D., Golnik, A., Kläser, M., ...
Solid State Communications, 121(2002) S.93-97
Isotopic mass and lattice constant of Si and Ge: X-Ray standing wave measurements (2001)
Zegenhagen, J., Kazimirov, A., Cao, L. X., Konuma, M., Sozontov, E., Plachke, D., ...
Inelastic X-ray scattering study of phonons in GaN and diamond (2001)
Ruf, T., Serrano, J., Cardona, M., Pavone, P., Pabst, M., Krisch, M., ...
Isotope disorder effects in the Raman spectrum (2001)
Widulle, F., Ruf, T., Konuma, M., Silier, I., Kriegseis, W., Ozhogin, V.I., ...
Phonon Dispersion Curves in Wurtzite-Structure GaN Determined by Inelastic X-Ray Scattering (2001)
Cardona, M., D'Astuto, M., Grzegory, I., Krisch, M., Leszczynski, M., Pabst, M., ...
Crystal field effect on the f-levels of R§1§+§xBa§2§-§xCu§3O§6§+§#d (R=Sm, Nd). (2001)
Nekvasil, V., Jandl, S., Barba, D., Martin, A.A., Cardona, M., Divis, M., ...
Proc. of the Internat.Conf.on Magnetism (ICM), Recife, BR, August 6-11, 2000 Part I
Barba, D., Jandl, S., Martin, A.A., Lin, C.T., Cardona, M., Wolf, T.
European Physical Journal B, 22(2001) S.277-81
Infrared transmission study of crystal-field excitations in Sm§1§-§xBa§2§-§xCu§3O§6§+§y. (2001)
Barba, D., Jandl, S., Nekvasil, V., Marysko, M., Divis, M., Martin, A.A., ...
Physical Review B, 63(2001) S.054528/1-10
The phonon dispersion of Wurtzite-structure GaN studied by inelastic X-ray scattering (2000)
Ruf, T., Serrano, J., Cardona, M., Pavone, P., Pabst, M., Krisch, M., ...
Magneto-Spectroscopy of Donor-Bound Excitons in Homoepitaxial GaN (2000)
Wysmołek, A., Sapega, V. F., Ruf, T., Cardona, M., Potemski, M., Wyder, P., ...
Magneto-spectroscopy of donor bound excitons in homoepitaxial GaN (2000)
Wysmolek, A., Sapega, V. F., Ruf, T., Cardona, M., Potemski, M., Wyder, P., ...
Optical study of crystal-field excitation in (R)Ba§2Cu§3O§7§-§#d single crystals. (2000)
Martin, A.A., Cardona, M., Jandl, S., Nekvasil, V., Wolf, T.
physica status solidi (b), 220(2000) S.475-82
Crystal field interaction in RBa§2Cu§3O§6 (R=Sm, Nd). (2000)
Jandl, S., Barba, D., Martin, A.A., Cardona, M., Nekvasil, V., Marysko, M., ...
Internat.Conf.on Magnetism (ICM), Recife, BR, August 6-11, 2000
Bernhard, C., Munzar, D., Kläser, M., Wolf, T., Lin, C.T., Cardona, M.
1st Euroconf.on Anomalous Complex Superconductors, Agia Pelagia, GR, September 26 - October 3, 1998
Anomalous phonon self-energy effects in SmBa§2Cu§3O§y: a Raman study. (1999)
Martin, A.A., Hadjiev, V.G., Ruf, T., Cardona, M., Wolf, T.
Physical Review B, 58(1998) S.14211-214
Martin, A.A., Ruf, T., Strach, T., Cardona, M., Wolf, T.
Physical Review B, 58(1998) S.14349-355
Effects of isotope disorder on energies and lifetimes of phonons in germanium. (1999)
Göbel, A., Wang, D.T., Cardona, M., Pintschovius, L., Reichardt, W., Kulda, J., ...
Physical Review B, 58(1998) S.10510-22
Hadjiev, V.G., Martin, A.A., Ruf, T., Cardona, M., Wolf, T.
Centennial Meeting of the American Physical Society, Atlanta, Ga., March 20-26, 1999
Anomalous phonon self-energy effects in SmBa§2Cu§3O§y: a Raman study. (1999)
Martin, A.A., Hadjiev, V.G., Ruf, T., Cardona, M., Wolf, T.
Centennial Meeting of the American Physical Society, Atlanta, Ga., March 20-26, 1999
Infrared study of crystal-field excitations in NdBa§2Cu§3O§6 single crystals. (1999)
Martin, A.A., Ruf, T., Cardona, M., Jandl, S., Barba, D., Wolf, T.
Centennial Meeting of the American Physical Society, Atlanta, Ga., March 20-26, 1999
Bernhard, C., Munzar, D., Wittlin, A., König, W., Golnik, A., Lin, C.T., ...
Physical Review B, 59(1999) S.R6631
Infrared study of crystal-field excitations in NdBa§2Cu§3O§6. (1999)
Martin, A.A., Ruf, T., Cardona, M., Jandl, S., Barba, D., Nekvasil, V., ...
Physical Review B, 59(1999) S.6528-33
Electronic Raman scattering in Y§1§-§xCa§xBa§2Cu§3O§7§-§#d. (1999)
Martin, A.A., Hadjiev, V.G., Bernhard, C., Ruf, T., Cardona, M., Wolf, T.
Physica Status Solidi b, 215(1999) S.477
Martin, A.A., Hadjiev, V.G., Bernhard, C., Ruf, T., Cardona, M., Wolf, T.
Physica Status Solidi b, 214(1999) S.R21
Raman study of Nd§1§+§xBa§2§-§xCu§3O§y. (1998)
Martin, A.A., Strach, T., Ruf, T., Cardona, M., Wolf, T.
1998 March Meeting of the American Physical Society, Los Angeles, Calif., March 16-20, 1998
Bernhard, C., Henn, R., Wittlin, A., Kläser, M., Wolf, T., Müller-Vogt, G., ...
Physical Review Letter 80(1998), S.1762-1765
Phonons in isotopically disordered Ge. (1994)
Etchegoin, P., Fuchs, H.D., Weber, J., Cardona, M., Pintschovius, L., Pyka, N., ...
Physical Review B, 48(1993) S.12661-71
Optical transitions in strained Ge/Si superlattices (1992)
Schmidt, U., Humlíček, J., Lukes, F., Cardona, M., Presting, H., Kibbel, H., ...
Band-to-band infrared absorption has been studied in a series of Sn1Gem (m=11, 15, and 21) strained layer superlattices for the first time. The absorption coefficient shows a quadratic increase with...
Optical transitions in strained Ge/Si superlattices (1992)
Schmidt, U., Humlícek, J., Lukes, F., Cardona, M., Presting, H., Kibbel, H., ...
Spectroscopic ellipsometry has been used to determine the dielectric functions of ultrathin Ge/Si superlattices with varying strain states and periodicity at room temperature. The E1-like transitions...
PRESSURE DEPENDENCE OF DYNAMICAL CHARGES AND IONICITY OF SEMICONDUCTORS (1984)
The advent of the diamond anvil cell has made possible very accurate determinations of the pressure dependence of phonon frequencies by means of Raman scattering. In polar materials pairs of...
PRESSURE DEPENDENCE OF DYNAMICAL CHARGES AND IONICITY OF SEMICONDUCTORS (1984)
The advent of the diamond anvil cell has made possible very accurate determinations of the pressure dependence of phonon frequencies by means of Raman scattering. In polar materials pairs of...
PHONON SOFTENING IN ULTRA HEAVILY DOPED Si AND Ge (1983)
Compaan, A., Contreras, G., Cardona, M., Axmann, A.
Multiple pulse annealing with a XeCl laser (308 nm, 10nsec, ~0.8J/cm2) has been used to produce flat concentration profiles following heavy implantations of Ga, B, P, and As at energies up to 350...
Contreras, G., Compaan, A., Wagner, J., Cardona, M., Axmann, A.
We report the observation of cw laser-excited visible luminescence at the E1 - E1, + Δ1 direct gaps in n-type Ge with Ne >≈ 1018 cm-3 . The phenomenon appears to be induced by...
Viña, L., Umbach, C., Compaan, A., Cardona, M., Axmann, A.
The E1 and E2structures in the optical constants of silicon have been profusely used during the last 20 years for studying the electronic states (band structure) of this semiconductor. We have...
PHONON SOFTENING IN ULTRA HEAVILY DOPED Si AND Ge (1983)
Compaan, A., Contreras, G., Cardona, M., Axmann, A.
Multiple pulse annealing with a XeCl laser (308 nm, 10nsec, ~0.8J/cm2) has been used to produce flat concentration profiles following heavy implantations of Ga, B, P, and As at energies up to 350...
Contreras, G., Compaan, A., Wagner, J., Cardona, M., Axmann, A.
We report the observation of cw laser-excited visible luminescence at the E1 - E1, + Δ1 direct gaps in n-type Ge with Ne >≈ 1018 cm-3 . The phenomenon appears to be induced by...
Viña, L., Umbach, C., Compaan, A., Cardona, M., Axmann, A.
The E1 and E2structures in the optical constants of silicon have been profusely used during the last 20 years for studying the electronic states (band structure) of this semiconductor. We have...
Calleja, J., Vogt, H., Cardona, M.
Using the Brillouin-Raman method we have measured the Raman scattering efficiencies for the Ɖ phonons of GaP, ZnTe, ZnSe, ZnS as well as CaF2, SrF2, BaF2. The results for the zincblende-type...
INFRARED AND FAR INFRARED ABSORPTION OF B- AND P-DOPED AMORPHOUS Si (1981)
The infrared and far infrared absorption spectra of B- and -[MATH]-doped a-Si(H) have been measured. The effect of annealing on these spectra has been studied. Three local modes of the B-H bond and a...
We have observed for excitation photon energy in resonance with the lowest gap of CdS and ZnTe, intense cooperative light scattering in which incident photons are scattered by an...
SELF-ENERGY OF PHONONS INTERACTING WITH FREE CARRIERS IN SILICON (1981)
Pintschovius, L., Vergés, J., Cardona, M.
The dispersion in the self energy of acoustic phonons produced by free electrons and holes in silicon has been measured with neutron scattering. The corresponding electron-phonon interaction...
SIMULATION OF LONG-WAVELENGTH OPTICAL PHONONS BY GENERALIZED INTERNAL STRAINS (1981)
A generalized external force applied to a crystal can introduce new atomic position parameters known as internal strains. Each internal strain may be looked as a "frozen" q ≈ 0 optical phonon...
Olego, D., Cardona, M., Vogl, P.
The transverse charge e*T and thus the ionicity of most tetrahedral semiconductors (e. g. GaAs) decreases with decreasing volume. We have measured the volume dependence of e*T in 3C-Sic and found dln...
Calleja, J., Vogt, H., Cardona, M.
Using the Brillouin-Raman method we have measured the Raman scattering efficiencies for the Ɖ phonons of GaP, ZnTe, ZnSe, ZnS as well as CaF2, SrF2, BaF2. The results for the zincblende-type...
INFRARED AND FAR INFRARED ABSORPTION OF B- AND P-DOPED AMORPHOUS Si (1981)
The infrared and far infrared absorption spectra of B- and -[MATH]-doped a-Si(H) have been measured. The effect of annealing on these spectra has been studied. Three local modes of the B-H bond and a...
We have observed for excitation photon energy in resonance with the lowest gap of CdS and ZnTe, intense cooperative light scattering in which incident photons are scattered by an...
SELF-ENERGY OF PHONONS INTERACTING WITH FREE CARRIERS IN SILICON (1981)
Pintschovius, L., Vergés, J., Cardona, M.
The dispersion in the self energy of acoustic phonons produced by free electrons and holes in silicon has been measured with neutron scattering. The corresponding electron-phonon interaction...
SIMULATION OF LONG-WAVELENGTH OPTICAL PHONONS BY GENERALIZED INTERNAL STRAINS (1981)
A generalized external force applied to a crystal can introduce new atomic position parameters known as internal strains. Each internal strain may be looked as a "frozen" q ≈ 0 optical phonon...
Olego, D., Cardona, M., Vogl, P.
The transverse charge e*T and thus the ionicity of most tetrahedral semiconductors (e. g. GaAs) decreases with decreasing volume. We have measured the volume dependence of e*T in 3C-Sic and found dln...
Self-energy of phonons interacting with free carriers in silicon. (1981)
Pintschovius, L., Verges, J.A., Cardona, M.
Internat.Conf.on Phonon Physics, Bloomington, Ind., August 28 - September 1, 1981
Investigations on the dynamics and structure of solids. (1980)
Abel, W., Baumgartner, O., Blanckenhagen, P.von, Blaschko, O., Cardona, M., Eder, O.J., ...
In: Progress Report. Teilinstitut Nukleare Festkoerperphysik des Instituts fuer Angewandte Kernphysik. 1.6.1979 - 31.5.1980 KfK-3051 (Dezember 80) S.1-39
ÉTUDE DES STRUCTURES DE BANDERESONANT FIRST AND SECOND ORDER RAMAN SCATTERING IN Gap (1974)
The dependence on laser frequency of the scattering cross section for allowed and forbidden first order Raman scattering and for second order scattering is presented. The measurements were performed...
Shevchik, N., Tejeda, J., Cardona, M., Langer, D.
The use of both far UV (hυ = 21.2 and 40.8 eV) and X-ray (hυ = 1 486.6 eV) excitation sources is shown to expand the power of photoemission experiments in determining the density of valence...
Mackerras, D, Irwig, L, Simpson, J M, Weisberg, E, Cardona, M, Webster, F, ...
A double-blind, placebo-controlled, randomized, factorial study using a daily oral administration of 30 mg beta-carotene and/or 500 mg vitamin C was conducted in 141 women with colposcopically and...