Josephson plasma resonance in κ-(BEDT-TTF)2Cu(NCS)2

被引：22

作者：

Mola, MM ^{[1
]}

King, JT

McRaven, CP

Hill, S

Qualls, JS

Brooks, JS

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA

[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.62.5965

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A cavity perturbation technique is used to study the microwave response of the organic superconductor kappa-(BEDT-TTF)(2)Cu(NCS)(2). Observation of a Josephson plasma resonance, below T-c (similar to 10 K), enables investigation of the vortex structure within the mixed state of this highly anisotropic, type-II superconductor. Contrary to previous assumptions, frequency-dependent studies (28-153 GHz) indicate that the squared plasma frequency (omega(p)(2)) depends exponentially on the magnetic-field strength. Such behavior has been predicted for a weakly pinned quasi-two-dimensional vortex lattice [Bulaevskii et al., Phys. Rev. Lett. 74, 801 (1995)]. Our data also suggests a transition in the vortex structure near the irreversibility Line.

引用

页码：5965 / 5970

页数：6

共 28 条

[1] Stability of the vortex lattice in ET superconductors studied by μSR [J].