On superconducting double transition in PrOs4Sb12

被引：30

作者：

Ichioka, M ^{[1
]}

Nakai, N ^{[1
]}

Machida, K ^{[1
]}

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 06期

关键词：

H-c2; anisotropy; unconventional superconductor; pairing function; PrOs4Sb12;

D O I：

10.1143/JPSJ.72.1322

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Superconducting double transition in PrOs4Sb12 is investigated by analyzing the anisotropy of the upper critical field H-c2 in the ab-plane, and the possible pairing state is discussed. When mixing due to gradient coupling is active, the twofold-symmetric component is necessarily induced in the fourfold symmetric phase, leading to the twofold oscillation of H-c2, contrary to the experimental result. To avoid the mixing effect, the weak spin-orbit coupling triplet pairing state is considered as a likely pairing function, where time-reversal symmetry is broken.

引用

页码：1322 / 1325

页数：4