Tunneling spectroscopy of the electron-doped layered superconductor Li0.48(THF)0.3HfNCl

被引：13

作者：

Ekino, T

Takasaki, T

Fujii, H

Yamanaka, S

机构：

[1] Hiroshima Univ, Grad Sch Adv Sci Matter, Higashihiroshima 7398530, Japan

[2] Hiroshima Univ, Grad Sch Engn, Higashihiroshima 7398527, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 388卷

关键词：

tunneling spectroscopy; superconducting gap; break junction; Li-0.48(THF)(0.3)HfNCl;

D O I：

10.1016/S0921-4534(02)02746-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tunneling measurements on the electron-doped layered superconductor Li-0.48(THF)(0.3)HfNCl(THF;C4H8O) with T-c = 25.5 K have been carried out. Since the surface of this compound is very reactive, we have employed in situ break junction to obtain unaffected interface. The result shows the gap value of 2Delta = 9-12 meV, which leads to the strong-coupling gap ratio 2Delta/k(B)T(c) similar or equal to 5. This is the largest value among non-cuprate superconductors. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：573 / 574

页数：2

共 6 条

[1] ENERGY GAPS IN BI-SR-CA-CU-O AND BI-SR-CU-O SYSTEMS BY ELECTRON-TUNNELING [J].