Magnetic quantum critical point and superconductivity in UPt3 doped with Pd

被引：21

作者：

de Visser, A

Graf, MJ

Estrela, P

Amato, A

Baines, C

Andreica, D

Gygax, FN

Schenck, A

机构：

[1] Univ Amsterdam, Van Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

[2] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[4] Swiss Fed Inst Technol, Inst Particle Phys, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.85.3005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Transverse-field muon spin relaxation measurements have been carried out on the heavy-fermion superconductor UPt3 doped with small amounts of Pd. We find that the critical Pd concentration for the emergence of the large-moment antiferromagnetic phase is similar to 0.6at.%Pd. At the same Pd content, superconductivity is completely suppressed. The existence of a magnetic quantum critical point in the phase diagram, which coincides with the critical point for superconductivity, provides evidence for ferromagnetic spin-fluctuation mediated odd-parity superconductivity, which competes with antiferromagnetic order.

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页码：3005 / 3008

页数：4

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