Thermodynamic and transport measurements of superconducting Na0.3CoO2•1.3H2O single crystals prepared by electrochemical deintercalation -: art. no. 157004

被引：116

作者：

Chou, FC ^{[1
]}

Cho, JH

Lee, PA

Abel, ET

Matan, K

Lee, YS

机构：

[1] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] Pusan Natl Univ, RCDAMP, Pusan 609735, South Korea

[4] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 15期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.157004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Superconducting single crystal samples of Na0.3CoO2.1.3H(2)O have been produced using an electrochemical technique which dispenses with the usual bromine chemical deintercalation method. In fully hydrated crystals, susceptibility and specific heat measurements confirm that bulk superconductivity has been achieved. The extracted normal state density of states indicates Fermi-liquid behavior with strong mass enhancement and a modest Wilson ratio. Measurements of H-c2 for Hparallel toc and Hparallel toab reveal significant anisotropy, and the extracted value for the coherence length is about 100 angle, consistent with an extremely narrow bandwidth.

引用

页码：157004 / 1

页数：4

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