Spin Caloritronic Transport of Tree-Saw Graphene Nanoribbons
Yu-Zhuo LV, Peng ZHAO**
School of Physics and Technology, University of Jinan, Jinan 250022
Abstract ：Using density functional theory combined with non-equilibrium Green's function method, we investigate the spin caloritronic transport properties of tree-saw graphene nanoribbons. These systems have stable ferromagnetic ground states with a high Curie temperature that is far above room temperature and exhibit obvious spin-Seebeck effect. Moreover, thermal colossal magnetoresistance up to 10$^{20}$% can be achieved by the external magnetic field modulation. The underlying mechanism is analyzed by spin-resolved transmission spectra, current spectra and band structures.
收稿日期: 2018-08-13
出版日期: 2018-12-25
:
73.23.-b
(Electronic transport in mesoscopic systems)
85.65.+h
(Molecular electronic devices)
71.15.Mb
(Density functional theory, local density approximation, gradient and other corrections)
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2019, Vol. 36 
