Neutron scattering study of the static and dynamic magnetic properties of UNi2Al3

被引:1
|
作者
Hiess, A
Brown, PJ
Aso, N
Roessli, B
Bernhoeft, N
Sato, NK
Lander, GH
机构
[1] CEA, DRFMC, SPSMS, MDN,MRS, F-38042 Grenoble 9, France
[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[3] Univ Tokyo, Inst Solid State Phys, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan
[4] Swiss Fed Inst Technol, Neutron Scattering Lab, Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[5] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
[6] ITU, JRC, European Commiss, D-76125 Karlsruhe, Germany
关键词
heavy fermions; superconductivity; magnetic; neutron scattering; magnetic structure; incommensurate;
D O I
10.1016/S0304-8853(00)00622-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The static and dynamic magnetic properties of the heavy fermion superconductor UNi2Al3 have been studied using spherical neutron polarimetry (SNP) and three-axis spectroscopy (TAS), respectively. The SNP measurements give strong evidence that. in the incommensurate antiferromagnetic state and without applied external field. the magnetic moments lie in the basal plane with a dominant component along the a*-direction. The form of the structure is a longitudinally modulated spin-density wave. The TAS experiments reveal quasi-elastic magnetic scattering in the vicinity of the ordering wave vector. These results are compared to those determined for the isostructural compound UPd2Al3. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:54 / 56
页数:3
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