Searching for the in-plane anisotropy of the specific heat of UPt3 in rotating fields

被引:1
|
作者
Kittaka, S. [1 ]
An, K. [1 ]
Sakakibara, T. [1 ]
Haga, Y. [2 ]
Yamamoto, E. [2 ]
Kimura, N. [3 ]
Nuki, Y. O. [2 ,4 ]
Machida, K. [5 ]
机构
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 980, Japan
[4] Osaka Univ, Dept Phys, Toyonaka, Osaka 560, Japan
[5] Okayama Univ Sci, Dept Phys, Okayama 700, Japan
来源
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011) | 2012年 / 391卷
基金
日本学术振兴会;
关键词
FERMION SUPERCONDUCTOR UPT3; PHASES; ORDER; MK;
D O I
10.1088/1742-6596/391/1/012031
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In order to identify the gap structure of a spin-triplet superconductor UPt3, we performed field-angle-resolved specific heat (C-phi) measurements in a magnetic field rotated around the [0001] axis. Although various theories predict fourfold symmetry of the gap in the superconducting C phase, we observed no angular variation in C-phi in a temperature range down to 88 mK (similar to 0.17T(c)). This absence of the variation in C-phi implies that the field-angle-dependent quasiparticle excitations, reflecting the gap anisotropy, are averaged out in the bulk of UPt3.
引用
收藏
页数:4
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