Mn1-xFexCoGe: A strongly correlated metal in the proximity of a noncollinear ferromagnetic state

被引：27

作者：

Samanta, Tapas ^{[1
]}

Dubenko, Igor ^{[1
]}

Quetz, Abdiel ^{[1
]}

Prestigiacomo, Joseph ^{[2
]}

Adams, Philip W. ^{[2
]}

Stadler, Shane ^{[2
]}

Ali, Naushad ^{[1
]}

机构：

[1] So Illinois Univ, Carbondale, IL 62901 USA

[2] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 04期

关键词：

KADOWAKI-WOODS RATIO; CRYSTAL;

D O I：

10.1063/1.4816381

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An unusually large Kadowaki-Woods ratio of A/gamma(2) similar to 43 mu Omega.cm.mol(2).K-2.J(-2) has been observed for intermetallic Mn1-xFexCoGe compounds in the proximity of x = 0.2 where the magnetic state of itinerant electrons system changes. The ratio is approximately four times larger than observed for heavy fermion systems. The manifestation of the strong electron correlations can be realized from the anisotropic origin of the effect through the substantial reduction of interlayer transport of heavy quasiparticles with comparable mean-free path and interlayer spacing in the proximity of a noncollinear ferromagnetic state associated with a large density of states at the Fermi level. (C) 2013 AIP Publishing LLC.

引用

页数：5