Fermiology of the organic superconductor β"-(ET)2SF5CH2CF2SO3

被引：23

作者：

Wosnitza, J

Wanka, S

Qualls, JS

Brooks, JS

Mielke, CH

Harrison, N

Schlueter, JA

Williams, JM

Nixon, PG

Winter, RW

Gard, GL

机构：

[1] Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany

[2] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

[3] LANL, Natl High Magent Field Lab, Los Alamos, NM 87545 USA

[4] Argonne Natl Lab, Div Chem & Mat Sci, Argonne, IL 60439 USA

[5] Portland State Univ, Dept Chem, Portland, OR 97207 USA

来源：

SYNTHETIC METALS | 1999年 / 103卷 / 1-3期

关键词：

organic superconductors; magnetic measurements; transport measurements;

D O I：

10.1016/S0379-6779(98)00920-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a detailed Fermi-surface (FS) investigation of the quasi two-dimensional (2D) organic superconductor (T-c = 4.5 K) beta "-(ET)(2)SF5CH2CF2SO3. In line with previous investigations, de Haas-van Alphen measurements in pulsed fields up to 60 T show a single oscillation frequency, F-0 = 200 T, which corresponds to a FS size of about 5% of the first Brillouin zone. Angular dependent magnetoresistance oscillations (AMROs) are utilized for the exact determination of the in-plane FS, which is found to be a strongly elongated ellipsoid with an axes ratio of about 1:9. Transport measurements in static fields up to 33 T show an unusual temperature dependence of the Shubnikov-de Haas (SdH) signal, i.e., a decrease of the SdH amplitude with decreasing temperature.

引用

页码：2000 / 2001

页数：2

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