Anomalous itinerant magnetism in single-crystal Sr4Ru3O10:: A thermodynamic and transport investigation

被引：13

作者：

Cao, G. ^{[1
]}

Chikara, S.

Brill, J. W.

机构：

[1] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[2] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.75.024429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A thermodynamic and transport study of Sr4Ru3O10 as a function of temperature and magnetic field is presented. The central results include a growing specific heat C with increasing field B, a magnetic contribution to C/T at low temperatures proportional to -log(T), an abrupt jump and a peak in C/T at 2.9 T and 7 T for B parallel to ab plane and B parallel to c axis, respectively, and corresponding changes in the low-T power laws of the resistivity. The novelty of this work lies in the fact that this system is strongly anisotropic displaying spontaneous ferromagnetism along the c axis and an intralayer metamagnetic transition with a possibility of a nearby quantum critical point. The exotic behavior reflects new physics that is yet to be understood.

引用

页数：6

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