MU+SR STUDIES OF UM2AL3, M = NI, PD

被引：34

作者：

AMATO, A

GEIBEL, C

GYGAX, FN

HEFFNER, RH

KNETSCH, E

MACLAUGHLIN, DE

SCHANK, C

SCHENCK, A

STEGLICH, F

WEBER, M

机构：

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

[2] UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA

[3] LEIDEN UNIV, KAMERLINGH ONNES LAB, 2300 RA LEIDEN, NETHERLANDS

[4] UNIV CALIF RIVERSIDE, DEPT PHYS, RIVERSIDE, CA 92521 USA

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1992年 / 86卷 / 02期

关键词：

D O I：

10.1007/BF01313820

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Positive-muon spin rotation (mu+SR) measurements have been carried out in the new heavy-fermion superconductors UM2Al3, M = Ni and Pd. In UNi2Al3 the observed mu+ frequencies in zero applied field indicate commensurate antiferromagnetic (AF) ordering of U moments approximately 0.1-mu(B)/U atom. These moments coexist with superconductivity and have the highest values observed in an AF heavy-fermion superconductor. The absence of well-defined frequencies in zero-field mu+SR in the AF state of UPd2Al3 suggests symmetric mu+ stopping sites. In this system mu+SR linewidths below T(c) yield a preliminary value of approximately 8000 angstrom for the London penetration depth.

引用

页码：159 / 160

页数：2

共 5 条

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