Electronic nature of the lock-in magnetic transition in CeXAl4Si2

被引：6

作者：

Gunasekera, J. ^{[1
]}

Harriger, L. ^{[2
]}

Dahal, A. ^{[1
]}

Maurya, A. ^{[3
]}

Heitmann, T. ^{[4
]}

Disseler, S. M. ^{[2
]}

Thamizhavel, A. ^{[3
]}

Dhar, S. ^{[3
]}

Singh, D. J. ^{[1
]}

Singh, D. K. ^{[1
]}

机构：

[1] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA

[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Tata Inst Fundamental Res, Mumbia, India

[4] Univ Missouri, Res Reactor, Columbia, MO 65211 USA

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 15期

关键词：

HEAVY-FERMION METALS; PHASE-TRANSITIONS; ANTIFERROMAGNETISM;

D O I：

10.1103/PhysRevB.93.155151

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the underlying magnetism in newly discovered single crystal Kondo lattices CeXAl4Si2, where X = Rh, Ir. We show that the compound undergoes an incommensurate-to-commensurate magnetic transition at T-c = 9.19 K (10.75 K in Ir). The spin correlation in the incommensurate phase is described by a spin density wave configuration of Ce ions, which locks in to the long-range antiferromagnetic order at T = T-c. The analysis of the experimental data, combined with the calculation of the electronic properties, suggests the role of the Fermi surface nesting as the primary mechanism behind this phenomenon.

引用

页数：5

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