Magnetotransport studies of the Fermi surface in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br

被引：0
|
作者：
Weiss, H
Kartsovnik, MV
Biberacher, W
Steep, E
Balthes, E
Jansen, AGM
Kushch, ND
机构：
[1] MPI KFK, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France
[2] CNRS, F-38042 Grenoble, France
[3] Walther Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany
[4] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
[5] Russian Acad Sci, Inst Chem Phys, Chernogolovka 142432, Russia
来源：
SYNTHETIC METALS | 1999年 / 103卷 / 1-3期
关键词：
organic conductors based on radical cation and or anion salts; organic superconductors; magnetotransport;
D O I：
10.1016/S0379-6779(98)00919-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The interlayer magnetoresistance of the organic superconductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br has been measured at ambient pressure and under pressure up to 12 kbar. Shubnikov-de Haas oscillations of two main frequencies, F similar or equal to 3900 T and F similar or equal to 150 T, corresponding to 100% and 3.5 4% of the Brillouin zone cross-section area, are observed in the pressure ranges p 0 - 9.4 kbar and p > 5 kbar respectively. The parameters of the slow oscillations indicate a considerable deviation of the Fermi surface from the theoretically predicted one. We propose to explain the experimental data by taking into account a low-temperature superstructure which doubles the lattice period in the c-direction.
引用
收藏
页码：1998 / 1999
页数：2
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