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所属单位：理学院

发表刊物：PHYSICS LETTERS A

关键字：Anomalous Nernst effect Floquet Weyl semimetals Orbital magnetization

摘要：Weyl semimetals and nodal line semimetals display a host of novel properties. Floquet Weyl semimetals with tunable Weyl points can be obtained from nodal line semimetals under the circularly polarized off resonant light. Here we theoretically investigate the anomalous Nernst effect and orbital magnetization in Floquet Weyl semimetals. Due to the anisotropy of the band structure in Floquet Weyl semimetals, highly anisotropic Berry phase mediated anomalous Nernst effect and orbital magnetization in the absence of magnetic field are observed, indicating orientation-dependent applications in the design of nanodevices. The amplitude and sign of anomalous Nernst coefficient and orbital magnetization can be tuned by the light direction, amplitude and polarization. The effect of the chemical potential on anomalous Nernst coefficient and orbital magnetization is also discussed. The light-modulated anomalous Nernst effect and orbital magnetization make Floquet Weyl semimetals potential candidates for thermoelectric devices. (C) 2018 Elsevier B.V. All rights reserved.

ISSN号：0375-9601

是否译文：否

发表时间：2018-03-16

合写作者：Wu, Xueshi

通讯作者：牛志平