Magnetic fluctuations and superconductivity in YbPd2Sn

被引：13
|
作者：
Amato, A [1 ]
Roessli, B
Fischer, P
Bernhoeft, N
Stunault, A
Baines, C
Dönni, A
Sugawara, H
机构：
[1] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland
[2] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[3] Swiss Fed Inst Technol, CH-5232 Villigen, Switzerland
[4] CEA, F-38054 Grenoble, France
[5] Inst Max Von Laue Paul Langevin, F-38054 Grenoble, France
[6] Niigata Univ, Dept Phys, Niigata 9502181, Japan
[7] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2003年 / 326卷 / 1-4期
关键词：
muon spin relaxation; inelastic neutron scattering; superconductivity; kondo effect;
D O I：
10.1016/S0921-4526(02)01631-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report muon spin. relaxation and inelastic neutron measurements on the Heusler system YbPd2Sn. Localized anisotropic and quasi-elastic Yb magnetic fluctuations are observed below T = 150 K. Both muSR and neutron data indicate a slowing-down of the spin fluctuations upon lowering the temperature, similar to that observed in Kondo lattices. The temperature dependence of the quasi-elastic neutron signal is compatible with a crystal-electric field scheme having a Gamma(7)(CEF) ground state. The muon depolarization rate exhibits an additional contribution upon decreasing the temperature below T-c suggesting a close interplay between magnetic fluctuations and the superconducting state. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：369 / 373
页数：5
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