Graphene nanoribbon intercalated with hexagonal boron nitride: Electronic transport properties from ab initio calculations

被引：10
|
作者：
Padilha, Jose Eduardo [1 ]
Pontes, Renato Borges [2 ]
Roque da Silva, Antonio Jose [1 ,3 ]
Fazzio, Adalberto [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil
[2] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil
[3] Lab Nacl Luz Sincrotron, BR-13083970 Campinas, SP, Brazil
来源：
SOLID STATE COMMUNICATIONS | 2013年 / 173卷
基金：
巴西圣保罗研究基金会;
关键词：
Graphene nanoribbons; Hexagonal boron nitride; Magnetic tunnel junction; DFT plus NEGF transport calculations; SPIN-VALVE DEVICES; ROOM-TEMPERATURE; MAGNETORESISTANCE; GAS; GRAPHITE; FILMS;
D O I：
10.1016/j.ssc.2013.08.022
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A magnetic tunnel junction consisting of a boron nitride nanoribbon contacted by two semi-infinite electrodes composed of (3,0) ferromagnetic zig-zag graphene nanoribbons was investigated. Performing spin-polarized ab initio transport calculations based on a scheme that combines non-equilibrium Green's function with density functional theory (NEGF-FDFT) we predict that such system could act as spin-filter (the efficiency reaches 50%) and present a magnetoristance of 10(5)%, depending on the length of the boron nitride region. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：24 / 29
页数：6
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