Fermi-surface topology of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br at ambient pressure

被引：51

作者：

Mielke, CH ^{[1
]}

Harrison, N ^{[1
]}

Rickel, DG ^{[1
]}

Lacerda, AH ^{[1
]}

Vestal, RM ^{[1
]}

Montgomery, LK ^{[1
]}

机构：

[1] INDIANA UNIV, DEPT CHEM, BLOOMINGTON, IN 47405 USA

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.56.R4309

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ambient pressure Fermi-surface measurements are reported for kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br. The single Shubnikov-de Haas frequency that is detected (3798+/-5 T) corresponds to 100% of the Brillouin zone and can be attributed to the beta orbit that results from magnetic breakdown. From the temperature dependence of the oscillations, it appears that kappa-(BEDT-TTF)(2)Cu[N(CN)(2))Br possesses a conventional Fermi-liquid ground state, although with a short mean free path, possibly due to the presence of Cu(II) ions. The effective mass as determined from the beta-orbit oscillations is m* = 5.4 +/- 0.1 m(e).

引用

页码：R4309 / R4312

页数：4

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