Field-angle dependence of thermal transport in Kitaev-ホ? model
Field-angle dependence of thermal transport in Kitaev-ホ? model
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Kitaev 模型中热传输的场角依赖性
DOI：
10.1088/1742-6596/2164/1/012071
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
S. Koyama and J. Nasu
中科院分区：
文献类型：
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作者：
Leo Maximov;Nico Huber;Andreas Bauer;Keiya Shirahama;Christian Pfleiderer;T. Hisamoto;S. Koyama and J. Nasu
我们研究了具有Γ-type相互作用的Kitaev模型对磁场的影响，该模型对理解真实材料的磁性具有重要作用。我们用线性自旋波理论研究了平均场相图和热霍尔电导率。我们发现Γ相互作用极大地改变了热霍尔电导率的场角依赖性，并抑制了其大小。这种抑制是由于在增加Γ相互作用的同时增强了低能磁振子隙。
We investigate the magnetic field effect on the Kitaev model with the Γ-type interaction, which plays an essential role in understanding the magnetic properties of real materials. We examine the mean-field phase diagram and thermal Hall conductivity using the linear spin-wave theory. We find that the Γ interaction substantially changes the field-angle dependence of the thermal Hall conductivity and suppresses its magnitude. The suppression is caused by the enhancement of the low-energy magnon gap while increasing the Γ interaction.