AL-27 NMR-STUDY OF THE NEW HEAVY-FERMION SUPERCONDUCTORS UM2AL3 (M = NI, PD)

被引：22

作者：

KYOGAKU, M

KITAOKA, Y

ASAYAMA, K

SATO, N

SAKON, T

KOMATSUBARA, T

GEIBEL, C

SCHANK, C

STEGLICH, F

机构：

[1] TOHOKU UNIV, DEPT PHYS, SENDAI, MIYAGI 980, JAPAN

[2] TH DARMSTADT, INST FESTKORPERPHYS, W-6100 DARMSTADT, GERMANY

来源：

PHYSICA B-CONDENSED MATTER | 1993年 / 186-88卷

关键词：

D O I：

10.1016/0921-4526(93)90555-K

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the nuclear spin-lattice relaxation time T1 and the Knight shift of Al-27 of the new heavy-fermion superconductors (HFS), UNi2Al3 and UPd3Al3. The magnetism of these compounds is quite different. In UPd2Al3, the relaxation behavior below T(c) is reminiscent of other HFS reported thus far, providing evidence for unconventional superconductivity. The Knight shift has been found to be reduced below T(c), irrespective of the direction of the crystal axes, pointing to the singlet nature of the pairing. In UNi2Al3, however, 1/T1 and the Knight shift exhibit no indication of anomalies at the superconducting transition.

引用

页码：285 / 287

页数：3

共 11 条

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