Ou Junheng, Zhang Qingtian
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China.
Nanomaterials (Basel). 2022 Jul 9;12(14):2350. doi: 10.3390/nano12142350.
We investigated spin-dependent thermoelectric transport in zigzag phosphorene nanoribbons with a ferromagnetic stripe. We explored the possibility to enhance the spin thermopower via modifications of the edge states in zigzag ribbons. Two methods are proposed to modulate the edge transport: one is applying gate voltages on the edges; the other is including notches on the ribbon edges. The transport gap is enlarged by the edge-state modifications, which enhance the charge and spin Seebeck coefficients almost twofold. Our results suggest phosphorene to be a promising material for thermoelectric applications and open a possibility to design a tunable spin-thermoelectric device.
我们研究了具有铁磁条纹的锯齿形磷烯纳米带中的自旋相关热电输运。我们探索了通过修改锯齿形带中的边缘态来增强自旋热功率的可能性。提出了两种调制边缘输运的方法：一种是在边缘施加栅极电压；另一种是在带边缘设置缺口。通过边缘态修改扩大了输运能隙，这使得电荷和自旋塞贝克系数几乎提高了两倍。我们的结果表明磷烯是热电应用的一种有前途的材料，并为设计可调谐自旋热电器件开辟了可能性。
