Neutron diffraction study of the heavy fermion superconductors UM2Al3(M=Pd,Ni)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Neutron diffraction study of the heavy fermion superconductors UM2Al3(M=Pd,Ni)

Authors:	A Krimmel P Fischer B Roessli H Maletta C Geibel C Schank A Grauel A Loidl F Steglich

Institution:	(1) Institut Laue Langevin, F-38042 Grenoble, France;(2) Labor für Neutronenstreuung, ETH Zürich, PSI, CH-5232 Villigen, Switzerland;(3) Hahn-Meitner Institut, W-1000 Berlin, Federal Republic of Germany;(4) Institut für Festkörperphysik, TH Darmstadt, W-6100 Darmstadt, Federal Republic of Germany;(5) Institut für Physik, Universität Mainz, W-6500 Mainz, Federal Republic of Germany

Abstract:	An elastic neutron scattering study was performed on the new superconducting heavy fermion systems UPd₂Al₃ and UNi₂Al₃. The neutron diffraction patterns reveal unambiguously long range antiferromagnetic order in UPd₂Al₃ with an ordered magnetic moment _U = (0.85±0.03) _B, which coexists with the superconducting state. This is by far the largest _U value observed for any heavy fermion superconductor. For UNi₂Al₃, no long-range magnetic order could be observed for temperaturesT1.5 K, yielding an upper limit of the ordered moment of 0.2 _B.

Keywords:
本文献已被 SpringerLink 等数据库收录！