COEXISTENCE OF LOCAL MOMENT MAGNETISM AND HEAVY-FERMION SUPERCONDUCTIVITY IN UPD2AL3

被引：103

作者：

FEYERHERM, R

AMATO, A

GYGAX, FN

SCHENCK, A

GEIBEL, C

STEGLICH, F

SATO, N

KOMATSUBARA, T

机构：

[1] TH DARMSTADT,INST FESTKORPERPHYS,D-64289 DARMSTADT,GERMANY

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

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.73.1849

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report muon spin rotation measurements on the antiferromagnetic heavy-fermion superconductor UPd2Al3 in the superconducting state. The London penetration depth is found to be approximately isotropic, lambda(perpendicular to)(0) = 4800 +/- 500 Angstrom and lambda(parallel to)(0) = 4500 +/- 500 Angstrom. The mu(+) Knight shift behavior below T-c indicates that local moment magnetism and superconductivity are carried by different electron substrates of 5f character, one of which involves the heavy quasiparticles. For the latter a nearly isotropic magnetic susceptibility (chi) = 1.7 x 10(-3) emu/mole can be estimated.

引用

页码：1849 / 1852

页数：4

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