Theory for phase transitions in insulating V2O3

被引：13

作者：

Joshi, A ^{[1
]}

Ma, M

Zhang, FC

机构：

[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[2] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 25期

关键词：

Antiferromagnetism - Degrees of freedom (mechanics) - Ferromagnetism - Hamiltonians - Honeycomb structures - Insulating materials - Magnetic susceptibility - Magnetization - Neutron scattering - Phase diagrams - Phase transitions - Quantum theory;

D O I：

10.1103/PhysRevLett.86.5743

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the recently proposed S = 2 bond model with orbital degrees of freedom for insulating V2O3 not only explains the anomalous magnetic ordering but also; other mysteries of the magnetic phase transition. The model contains an additional orbital degree of freedom that exhibits a zero temperature quantum phase transition in the Ising universality class.

引用

页码：5743 / 5746

页数：4

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