Magnetoelectric response of the antiferromagnetic insulator phase in a three-dimensional correlated system with spin-orbit coupling
Magnetoelectric response of the antiferromagnetic insulator phase in a three-dimensional correlated system with spin-orbit coupling
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DOI：
10.1088/1742-6596/592/1/012128
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发表时间：
2015-03
期刊：
影响因子：
--
通讯作者：
A. Sekine;K. Nomura
中科院分区：
文献类型：
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作者：
A. Sekine;K. Nomura
本文从理论上研究了具有自旋-轨道耦合的三维关联系统Fu-Kane-Mele-Hubbard模型中的反铁磁绝缘相。我们重点研究了由θ项描述的拓扑磁电效应。在反铁磁绝缘体相中导出了低能有效哈密顿量。然后，使用场论方法，θ项推导出的手征异常的后果。
We theoretically investigate the antiferromagnetic insulator phase in a threedimensional correlated system with spin-orbit coupling, the Fu-Kane-Mele-Hubbard model at half-filling. We focus on the topological magnetoelectric effect which is described by the theta term. A low-energy effective Hamiltonian is derived in the antiferromagnetic insulator phase. Then with the use of a field-theoretical method, the theta term is derived as a consequence of the chiral anomaly.