Upper critical fields and de Haas-van Alphen oscillations in UNi2Al3

被引：3
|
作者：
Terashima, T. [1 ]
Enomoto, K.
Konoike, T.
Uji, S.
Sato, N. K.
Yamagami, H.
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan
[2] Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya, Aichi 4648602, Japan
[3] Kyoto Sangyo Univ, Dept Phys, Fac Sci, Kyoto 6038555, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2006年 / 378-80卷
关键词：
UNiAl3; de Haas-van Alphen effect; superconductivity;
D O I：
10.1016/j.physb.2006.01.380
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The upper critical field B-c2 in UNi2Al3 is determined as a function of temperatnre for B parallel to a and c from ac susceptibility measurements on a single crystal. B-c2(0) is estimated at 0.93 (parallel to a) and 0.76T (parallel to c). It is argued that B,2 is dominated by orbital effects. De Haas-van Alphen oscillations with F = 3.29 T and m* = 8.3 +/- 0.1 m(e) (m(c) = free electron mass) are observed for B" c. It is shown that the observed orbit most likely involves the magnetic breakdown. The orbit is compared to the UPd2Al3 beta orbit. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：991 / 992
页数：2
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