期刊论文

Deng, X. Q.

英文

Physics Letters A

0375-9601

2014

378

21

1540-1547

10.1016/j.physleta.2014.03.036

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [61071015, 61101009, 61201080, 61371065]; Scientific Research Fund of Hunan Provincial Education DepartmentHunan Provincial Education Department [118008, 12A001]; Construct Program of the Key Discipline in Hunan Province; Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province

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Using the non-equilibrium Green's function method combined with the density functional theory, we investigate the electron and spin transport properties of carbon chains covalently connected with zigzag-edged graphene electrodes at finite bias with the parallel (P) and antiparallel (AP) magnetism configurations. When two zigzag-edged graphene electrodes are H2-ZGNR--H structures, spin filtering effect can be realized only with AP magnetism configuration. While one electrode is replaced with the H-ZGNR-H structure, we observe a dual spin filtering effect with above two magnetism configurations....