Superconductivity and structural transformation in HfV2 and Nb-doped HfV2

被引：24

作者：

Chu, F ^{[1
]}

Chen, ZW ^{[1
]}

Fuller, CJ ^{[1
]}

Lin, CL ^{[1
]}

Mihalisin, T ^{[1
]}

机构：

[1] TEMPLE UNIV,DEPT PHYS,PHILADELPHIA,PA 19122

来源：

JOURNAL OF APPLIED PHYSICS | 1996年 / 79卷 / 08期

关键词：

D O I：

10.1063/1.362013

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of the specific heat shows that the strong electron-phonon coupling system HfV2 undergoes a structural transformation at 116 K and becomes superconducting around 9 K. The structural instability can be interpreted in terms of a strong electron-phonon coupling and Fermi surface nesting. The structural transformation shifts to lower temperatures with very dilute Nb substitution in HfV2, and completely disappears with only 5 at. % Nb. The low-temperature specific heat of HfV2 shows a large density of states at the Fermi level. These experimental results are consistent with predictions from band-structure calculations. (C) 1996 American Institute of Physics.

引用

页码：6405 / 6407

页数：3

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