The Effects of Negative Differential Resistance, Bipolar Spin-Filtering, and Spin-Rectifying on Step-Like Zigzag Graphene Nanoribbons Heterojunctions with Single or Double Edge-Saturated Hydrogen
作者： Lihua Wang , Jianguo Zhao , Bingjun Ding , Yong Guo
DOI: 10.1007/S11664-016-4931-5
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摘要: In this study, we investigated the spin-resolved transport aspects of step-like zigzag graphene ribbons (ZGNRs) with single or double edge-saturated hydrogen using a method that combined density functional theory nonequilibrium Green’s function under local spin approximation. We found that, when ZGNR-based heterojunctions were in parallel antiparallel layout, negative differential resistance, maximum bipolar spin-filtering, and spin-rectifying effects occurred synchronously except for case spin-down electrons magnetic layouts. Interestingly, these properties almost unaffected by altering widths two component ribbons. Therefore, ZGNR are promising use designing high-performance multifunctional spintronic devices.
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