新型炭材料2012，Vol.27Issue(3)：181-187,7.DOI:10.1016/S1872-5805(12)60012-2
具有边缘缺陷石墨烯纳米结的自旋输运特性
The spin-dependent transport properties of a zigzag graphene nanoribbon edge-defect junction
摘要
Abstract
First-principles calculation was performed to investigate the transport properties of edge-defect junctions of graphene with H-terminated or bare edges,which were generated by removing edge carbon atoms from a perfect ribbon.The edge defect changes the electronic transport behavior of a zigzag graphene nanoribbon from spin-degenerated for a perfect ribbon to highly spin-polarized for edge-defective ones at the Fermi level.The electronic local density of states isosurface calculations could help understand the transport results.These junctions could generate spin-polatized currents.Especially,the bare edge-defect junction has a high spin filter efficiency regardless of the external bias.This behavior suggests a possible use of the edge-defective graphene in a spin filter system.关键词
石墨烯纳米带/边缘缺陷结/自旋输运Key words
Graphene nanoribbon/ Edge-defect junction/ Spin-dependent transport分类
化学化工引用本文复制引用
安丽萍,刘念华..具有边缘缺陷石墨烯纳米结的自旋输运特性[J].新型炭材料,2012,27(3):181-187,7.基金项目
国家自然科学基金(10832005) （10832005）
National Science Foundation of China (10832005) （10832005）
