Field-angle dependence of thermal Hall conductivity in a magnetically ordered Kitaev-Heisenberg system
Field-angle dependence of thermal Hall conductivity in a magnetically ordered Kitaev-Heisenberg system
复制标题
磁序基塔耶夫-海森堡系统中霍尔热导率的场角依赖性
DOI:
10.1103/physrevb.104.075121
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发表时间:
2021
影响因子:
3.7
通讯作者:
Nasu Joji
中科院分区:
文献类型:
--
作者:
Koyama Shinnosuke;Nasu Joji
We study magnetic excitations and thermal Hall effect on the Kitaev-Heisenberg model under magnetic fields. By employing the spin-wave theory for the magnetic orders realized in this model, we examine the topological nature of the spin-wave dispersions and calculate the thermal Hall conductivity. The comprehensive investigations on the field-angle dependence clarify that the thermal Hall conductivity is sensitive to the spin ordered pattern and excitation spectra of magnons; this quantity is enhanced by the noncoplanar spin configurations and small magnon gap in the excitation spectrum. On the other hand, we also find a common feature in the field-angle dependence of the thermal Hall conductivity. It vanishes when the magnetic field is on the planes spanned by the spin axes. We reveal that the behavior is intrinsic to the Kitaev-Heisenberg model in an applied field and demonstrate that the introduction of the off-diagonal spin interaction causes the disappearance of the feature in the thermal Hall conductivity.
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影响因子:
4.6
作者:
Yadav R;Bogdanov NA;Katukuri VM;Nishimoto S;van den Brink J;Hozoi L
通讯作者:
Hozoi L
影响因子:
38.5
作者:
H. Takagi;T. Takayama;G. Jackeli;G. Khaliullin;S. Nagler
通讯作者:
H. Takagi;T. Takayama;G. Jackeli;G. Khaliullin;S. Nagler
DOI:
--
发表时间:
2022
期刊:
影响因子:
--
作者:
Y. Kasahara;T. Yokoi;S. Ma;S. Kasahara;T. Shibauchi;N. Kurita;H. Tanaka;J. Nasu;Y. Motome;C. Hickey;S. Trebst;and Y. Matsuda
通讯作者:
and Y. Matsuda
影响因子:
64.8
作者:
Kasahara, Y.;Ohnishi, T.;Matsuda, Y.
通讯作者:
Matsuda, Y.