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

doi:10.1143/JPSJ.57.1540

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

Institute for Materials Research (IMR) (institute affiliation only)

Research output: Contribution to journal › Article › peer-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-T_c states of β-(BEDT-TTF)₂I₃ is small.

Original language	English
Pages (from-to)	1540-1543
Number of pages	4
Journal	journal of the physical society of japan
Volume	57
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.57.1540
Publication status	Published - 1988 Jan 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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Magnetoresistance in β-(BEDT-TTF)₂I₃ and β-(BEDT-TTF)₂IBr₂ : Shubnikov-de Haas Effect. / Murata, Keizo; Toyota, Naoki; Honda, Yoshiaki; Sasaki, Takahiko; Tokumoto, Madoka; Bando, Hiroshi; Anzai, Hiroyuki; Muto, Yoshio; Ishiguro, Takehiko.

In: journal of the physical society of japan, Vol. 57, No. 5, 01.01.1988, p. 1540-1543.

Research output: Contribution to journal › Article › peer-review

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

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.",

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

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T2 - Shubnikov-de Haas Effect

AU - Murata, Keizo

AU - Toyota, Naoki

AU - Honda, Yoshiaki

AU - Sasaki, Takahiko

AU - Tokumoto, Madoka

AU - Bando, Hiroshi

AU - Anzai, Hiroyuki

AU - Muto, Yoshio

AU - Ishiguro, Takehiko

PY - 1988/1/1

Y1 - 1988/1/1

N2 - 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.

AB - 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.

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