Shirdel-Havar Majid, Farghadan Rouhollah
Department of Physics, University of Kashan, Kashan, 87317-53153, Iran.
J Phys Condens Matter. 2020 Jul 1;32(28):285302. doi: 10.1088/1361-648X/ab8154.
We theoretically investigate the spin-related thermoelectric properties in C dimer bridged between zigzag graphene nanoribbon electrodes using the tight-binding model, equilibrium Green's function method, and Landauer-Büttiker transport formalism. By applying a thermal gradient, our proposed device could generate a notable spin thermopower. Moreover, by switching the magnetization of the electrodes, different spin currents, and giant thermal magnetoresistance (MR) can be achieved. Interestingly, various types of C dimers also produce a thermal MR, which is sensitively modified by the gate voltages.
我们使用紧束缚模型、平衡格林函数方法和朗道尔-布蒂克尔输运形式理论，对锯齿形石墨烯纳米带电极之间桥接的C二聚体中的自旋相关热电性质进行了理论研究。通过施加热梯度，我们提出的器件可以产生显著的自旋热功率。此外，通过切换电极的磁化强度，可以实现不同的自旋电流和巨大的热磁电阻（MR）。有趣的是，各种类型的C二聚体也会产生热MR，其会受到栅极电压的灵敏调制。
