Valley and spin thermoelectric transport in ferromagnetic silicene junctions
Valley and spin thermoelectric transport in ferromagnetic silicene junctions
复制标题
铁磁硅烯结中的谷和自旋热电传输
DOI:
10.1063/1.4876927
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发表时间:
2014-05
影响因子:
4
通讯作者:
Dong Shihao
中科院分区:
文献类型:
--
作者:
Niu Zhi Ping;Dong Shihao
We have investigated the valley and spin resolved thermoelectric transport in a normal/ferromagnetic/normal silicene junction. Due to the coupling between the valley and spin degrees of freedom, thermally induced pure valley and spin currents can be demonstrated. The magnitude and sign of these currents can be manipulated by adjusting the ferromagnetic exchange field and local external electric field, thus the currents are controllable. We also find fully valley and/or spin polarized currents. Similar to the currents, owing to the band structure symmetry, tunable pure spin and/or valley thermopowers with zero charge counterpart are generated. The results obtained here suggest a feasible way of generating a pure valley (spin) current and thermopower in silicene.
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