SHUBNIKOV-DEHAAS EFFECT AND THE FERMI-SURFACE OF KAPPA-(BEDT-TTF)2CU(NCS)2

被引：13

作者：

HEIDMANN, CP ^{[1
]}

MULLER, H ^{[1
]}

BIBERACHER, W ^{[1
]}

NEUMAIER, K ^{[1
]}

PROBST, C ^{[1
]}

ANDRES, K ^{[1
]}

JANSEN, AGM ^{[1
]}

JOSS, W ^{[1
]}

机构：

[1] MAX PLANCK INST HOCHFELD MAGNETLABOR,F-38042 GRENOBLE,FRANCE

来源：

SYNTHETIC METALS | 1991年 / 42卷 / 1-2期

关键词：

D O I：

10.1016/0379-6779(91)92006-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report magnetoresistance results for aleph-(BEDT-TTF)2 Cu(NCS)2 at temperatures down to 50 mK and in fields up to 27 T. For both transverse (I parallel-to b,c) and longitudinal (I parallel-to a*) configurations a single fundamental frequency of 597 +/- 7 T was found for B parallel-to a*). The angular dependence of the fundamental is found to follow a 1/cos-theta law, as expected for two-dimensional case, up to the highest angle measured (69-degrees). From the absence of a beat pattern between 8 T and 27 T we estimate the variation of the cross-sectional area of the cylinder to be less than 1%. Above 20 T we observe a set of high frequency oscillations at frequencies F(p) = (2650 + (p-1) x 600) T (p = 1..5) which we attribute to large orbits due to magnetic break-down. All observations are in agreement with existing band structure calculations.

引用

页码：2029 / 2032

页数：4

共 8 条

[1]

ANDRES K, 1991, SYNTH METAL, V41

[2]

HEIDMANN CP, 1990, IN PRESS P NATO AS B

[3]

HEIDMANN CP, IN PRESS

[4]

Muller H., 1990, Physics and Chemistry of Organic Superconductors. Proceedings of the ISSP International Symposium, P195

[5] INFLUENCE OF GROWTH-CONDITIONS ON THE SUPERCONDUCTING-TC OF KAPPA-(BEDT-TTF)2CU(NCS)2 CRYSTALS [J].

MULLER, H ;

HEIDMANN, CP ;

KELLNER, D ;

BIBERACHER, W ;

ANDRES, K .

SYNTHETIC METALS, 1990, 39 (02) :261-267

[6]

MULLER H, 1991, SYNTHETIC MET, V41, P2377

[7] SHUBNIKOV-DEHAAS EFFECT AND THE FERMI-SURFACE IN AN AMBIENT-PRESSURE ORGANIC SUPERCONDUCTOR [BIS(ETHYLENEDITHIOLO)TETRATHIAFULVALENE]2CU(NCS)2 [J].

OSHIMA, K ;

MORI, T ;

INOKUCHI, H ;

URAYAMA, H ;

YAMOCHI, H ;

SAITO, G .

PHYSICAL REVIEW B, 1988, 38 (01) :938-941

[8]

Pratt F. L., 1990, Physics and Chemistry of Organic Superconductors. Proceedings of the ISSP International Symposium, P200

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