Giant Shubnikov-de Haas oscillation in τ-conductors

被引：2
|
作者：
Konoike, T [1 ]
Iwashita, K
Sasaki, T
Hiraki, K
Takahashi, T
Papavassiliou, GC
Yoshino, H
Murata, K
机构：
[1] Osaka City Univ, Grad Sch Sci, Sumiyoshi Ku, Osaka 5588585, Japan
[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[3] Gakushuin Univ, Fac Sci, Toshima Ku, Tokyo 1718588, Japan
[4] Natl Hellen Res Fdn, Inst Theoret & Phys Chem, GR-11635 Athens, Greece
来源：
SYNTHETIC METALS | 2003年 / 133卷
关键词：
organic conductor; magnetoresistance; Shubnikov-de Haas oscillation;
D O I：
10.1016/S0379-6779(02)00240-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetoresistance (MR) of two-dimensional organic tau-conductors, tau-(EDO-S,S-DMEDT-TTF)(2)(AuBr2)(1+y) and tau-(P-S,S-DMEDT-TTF)(2)(AuBr2)(1+y) (y similar to 0.75) in high magnetic field was investigated. In both salts, large negative MR and Shubnikov-de Haas (SdH) oscillation were observed though the resistance of these compounds show upturn at low temperature. Especially for latter salt, the amplitude of SdH oscillation is so giant (\Deltarho/rho(0)\ similar to 30%). From the frequency of the SdH, the area of Fermi surface for each compound is calculated to be 0.65, 6.1 and 6.8%, respectively. These values are not consistent with the previously calculated value of 12.5% for single star-shaped Fermi surface for y similar to 0.75. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：157 / 158
页数：2
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