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Titolo:
Angle-dependent magnetoquantum oscillations in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br
Autore:
Weiss, H; Kartsovnik, MV; Biberacher, W; Balthes, E; Jansen, AGM; Kushch, ND;
Indirizzi:
Max Planck Inst, FKF, High Field Magnet Lab, F-38042 Grenoble 9, France Max Planck Inst Grenoble France 9 Magnet Lab, F-38042 Grenoble 9, France CNRS, F-38042 Grenoble, France CNRS Grenoble France F-38042CNRS, F-38042 Grenoble, France Walther Meissner Inst, D-85748 Garching, Germany Walther Meissner Inst Garching Germany D-85748 D-85748 Garching, Germany Russian Acad Sci, Inst Chem Phys Res, Chernogolovka 142432, Russia RussianAcad Sci Chernogolovka Russia 142432 hernogolovka 142432, Russia Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia Russian Acad Sci Chernogolovka Russia 142432 hernogolovka 142432, Russia
Titolo Testata:
PHYSICAL REVIEW B-CONDENSED MATTER
fascicolo: 24, volume: 60, anno: 1999,
pagine: R16259 - R16262
SICI:
0163-1829(199912)60:24<R16259:AMOIK>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORGANIC SUPERCONDUCTOR KAPPA-(BEDT-TTF)(2)CUBR; BEDT-TTF; PRESSURE; BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE; KAPPA-(BEDT-TTF)2CU(NCS)2; MAGNETORESISTANCE; TEMPERATURE; TRANSITION; STATES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Weiss, H Max Planck Inst, FKF, High Field Magnet Lab, Boite Postale 166, F-38042 Grenoble 9, France Max Planck Inst Boite Postale 166 Grenoble France 9 le 9, France
Citazione:
H. Weiss et al., "Angle-dependent magnetoquantum oscillations in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br", PHYS REV B, 60(24), 1999, pp. R16259-R16262

Abstract

De Haas-van Alphen and Shubnikov-de Haas oscillations in the organic superconductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br have been studied at different orientations of the magnetic field with respect to the conducting layers. In addition to the previously reported magnetic breakdown frequency F beta(theta=0 degrees) similar or equal to 3790 T, a frequency of similar or equalto 530 T has been detected. This frequency is attributed to the classical alpha orbit enclosing similar or equal to 14% of the Brillouin zone cross-section area, confirming earlier extended Huckel model band structure calculations. The angular dependence of the beta oscillation amplitude exhibits pronounced spin splitting zeros. At certain field orientations, distinct beating of the beta orbit dHvA oscillations is found, originating most likely from a very slight "warping" of the Fermi surface in the least conducting direction. In contrast, SdH oscillations, detected simultaneously at the same conditions, show no sign of beating. [S0163-1829(99)52148-6].

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Documento generato il 29/09/20 alle ore 05:34:30