STM spectroscopy on κ-(BEDT-TTF)2Cu(NCS)2

被引：6
|
作者：
Arai, T [1 ]
Ichimura, K
Nomura, K
Takasaki, S
Yamada, J
Nakatsuji, S
Anzai, H
机构：
[1] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan
[2] Himeji Inst Technol, Dept Mat Sci, Kamigori, Hyogo 6781297, Japan
来源：
SYNTHETIC METALS | 2001年 / 120卷 / 1-3期
关键词：
scanning tunneling microscopy; superconducting phase transitions; organic superconductors;
D O I：
10.1016/S0379-6779(00)01177-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dI/dV-V curves in the superconducting phase of kappa-(BEDT-TTF)(2)Cu(NCS)(2) single crystals have been measured by STM spectroscopy. The tunneling spectra on the lateral surfaces systematically vary depending on the tunneling direction in the b-c plane. This is explained by the d(x2)-(y2)-wave gap model considering the k dependence of the tunneling transition probability. The pseudogap-like behavior is observed at temperatures between T-c and 45 K. It is strongly suggested that the pair wave function has the d(x2)-(y2)-wave symmetry in this salt.
引用
收藏
页码：707 / 708
页数：2
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