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Field- and angular-dependent resistance of λ- (BETS)2 Fe Cl4 under pressure

Title
Field- and angular-dependent resistance of λ- (BETS)2 Fe Cl4 under pressure
Authors
Jo Y.J.Kang H.Kang W.Uji S.Terashima T.Tanaka T.Tokumoto M.Kobayashi A.Kobayashi H.
Ewha Authors
강원조연정
SCOPUS Author ID
강원scopus
Issue Date
2006
Journal Title
Physical Review B - Condensed Matter and Materials Physics
ISSN
1098-0121JCR Link
Citation
vol. 73, no. 21
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We measured the field strength and angular dependence in the electrical resistance of the organic conductor λ- (BETS)2 Fe Cl4 under a pressure of 6 kbar. In addition to the slow Shubnikov-de Haas (SdH) oscillations similar to those observed at ambient pressure, much faster oscillations are detected and attributed to the magnetic breakdown (MB) orbit. The increase of the SdH frequency indicates an increase in the size of the closed Fermi surface under pressure. The effective masses as determined from the closed and MB orbit oscillations are (2.9±0.3) m0 and (5.5±0.3) m0, respectively. The effective mass becomes smaller under pressure most likely due to the broadening of the bandwidth. The estimated internal field increases from 32 to 52 T under a pressure of 6 kbar. Angular-dependent magnetoresistance oscillations reveal a very small closed orbit which is not detected in the SdH oscillation measurements. © 2006 The American Physical Society.
DOI
10.1103/PhysRevB.73.214532
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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