Magnetoresistance in β-(BEDT-TTF)2I3 and β-(BEDT-TTF)2IBr2: Shubnikov-de Haas Effect

Keizo Murata, Naoki Toyota, Yoshiaki Honda, Takahiko Sasaki, Madoka Tokumoto, Hiroshi Bando, Hiroyuki Anzai, Yoshio Muto, Takehiko Ishiguro

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Oscillations in the transverse magnetoresistance of β-(BEDT-TTF)2I3 and β-(BEDT-TTF)2IBr2 were observed below 4.2 K in fields above 9 Tesla applied perpendicular to the a-b plane. The period of the resistance oscillation vs the inverse magnetic field proved that the cross-sectional area of the two-dimensional Fermi surface was nearly a quarter of the first Brillouin zone for both β-(BEDT-TTF)2I3 and β-(BEDT-TTF)2IBr2. Beat–like phenomenon in the magnetoresistance oscillation was also observed in both salts, and its origin is discussed. The fact that the two salts are quite similar in Shubnikov-de Haas effect suggests that the difference in the band structure in the low- and high-Tc states of β-(BEDT-TTF)2I3 is small.

Original languageEnglish
Pages (from-to)1540-1543
Number of pages4
Journaljournal of the physical society of japan
Volume57
Issue number5
DOIs
Publication statusPublished - 1988 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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