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Titolo:
Magnetotransport studies of the Fermi surface in the organic superconductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br
Autore:
Weiss, H; Kartsovnik, MV; Biberacher, W; Steep, E; Balthes, E; Jansen, AGM; Andres, K; Kushch, ND;
Indirizzi:
Max,Planck Inst Festkorperforsch, High Field Magnet Lab, F-38042 Grenoble 9 Max Planck Inst Festkorperforsch Grenoble France 9 b, F-38042 Grenoble 9 CNRS, F-38042 Grenoble, France CNRS Grenoble France F-38042CNRS, F-38042 Grenoble, France Walther Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany Walther Meissner Inst Tieftemp Forsch Garching Germany D-85748 , Germany Russian Acad Sci, Inst Chem Phy Res, Chernogolovka 142432, Russia Russian Acad Sci Chernogolovka Russia 142432 hernogolovka 142432, Russia
Titolo Testata:
PHYSICAL REVIEW B-CONDENSED MATTER
fascicolo: 19, volume: 59, anno: 1999,
pagine: 12370 - 12378
SICI:
0163-1829(19990515)59:19<12370:MSOTFS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
HAAS-VAN-ALPHEN; MAGNETIC-BREAKDOWN; DEUTERATED KAPPA-(BEDT-TTF)(2)CUBR; QUANTUM OSCILLATIONS; PRESSURE; TRANSITION; TEMPERATURE; KAPPA-(BEDT-TTF)2CU(NCS)2; INTERFERENCE; BEHAVIOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Weiss, H Maxenoblek Inst Festkorperforsch, High Field Magnet Lab, BP 166, F-38042 Gr Max Planck Inst Festkorperforsch BP 166 Grenoble France 9 042 Gr
Citazione:
H. Weiss et al., "Magnetotransport studies of the Fermi surface in the organic superconductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br", PHYS REV B, 59(19), 1999, pp. 12370-12378

Abstract

Detailed measurements of the interlayer magnetotransport of the organic superconductor K-bis(ethylenedithio)terrathiafulvalene(2)Cu[N(CN)(2)]Br have been carried out at ambient pressure as well as under quasihydrostatic pressure up to 12 kbar. Shubnikov-de Haas oscillations at frequencies approximate to 150, 300, and 3900 T have been observed at various pressures. The rapid oscillations correspond to 100% of the Brillouin zone cross-section area, revealing a magnetic breakdown orbit in accordance with the theoreticallypredicted Fermi surface. However, the lower two frequencies do not agree with the theoretical predictions based on the room-temperature crystal structure. In order to interpret the discrepancy, we propose that the Fermi surface undergoes substantial topological changes at a superstructural transition below 200 K. The model appears to be fully consistent with the experimental observations. [S0163-1829(99)00120-4].

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Documento generato il 29/09/20 alle ore 06:54:01