Heisenberg Ising-Kondo necklace model with transverse field for the heavy fermion compound URu2Si2

被引：1

作者：

Rufo, S. ^{[1
]}

Continentino, M. A. ^{[1
]}

机构：

[1] Ctr Brasilciro Pesquisas Fis, Rua Dr Xavier Sigaud,150 Urca, BR-22290180 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2018年 / 30卷 / 44期

关键词：

Kondo lattice models; strongly correlated systems; heavy fermions; SPIN FLUCTUATIONS; LATTICE; ANTIFERROMAGNETISM; MAGNETIZATION; PRESSURE; SYSTEM;

D O I：

10.1088/1361-648X/aae1da

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this work, we introduce the Heisenberg Ising-Kondo necklace with transverse field as a possible model to describe the heavy-fermion compound URu2Si2. The physics of this compound presents many open questions, like the transition to the hidden order (HO) phase at T-0 = 17.5 K. Our Hamiltonian includes elements that come from crystal field processes and Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. The main idea is to allow the transverse field, that a priori acts only in the localized moments, to influence the conduction-electrons via the RKKY interaction. Our results, obtained using a spin-wave approach for a one-dimensional lattice system, reveal a re-entrance behavior on the zero temperature phase diagram. This is an interesting result since combined with the magnetization values of the canted AF phase allow to link this phase with the mixed hidden order/large moment antiferromagnetic (HO/LMAF) phase observed in URu2Si2.

引用

页数：9

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