Spin transport properties of armchair graphene nanoribbons doped with Fe and B atoms

被引：35
作者：
Movlarooy, Tayebeh [1 ]
Zanganeh, Parvin [1 ]
机构：
[1] Shahrood Univ Technol, Fac Phys & Nucl Engn, Shahrood, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2019年 / 243卷
关键词：
Transport properties; Graphene nanoribbons; OFT; TRANSIESTA; Spintronic; AB-INITIO CALCULATIONS; ELECTRONIC-PROPERTIES; OPTICAL-SPECTRA; BORON-NITRIDE; ADSORPTION; NANOTUBES;
D O I：
10.1016/j.mseb.2019.04.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Spin-polarized density functional theory combined with non-equilibrium Green's function (NEGF) formalism is used to study the electronic, magnetic and transport properties of hydrogen-terminated armchair graphene nanoribbons doped with iron and boron atoms. We consider hydrogen terminated graphene nanoribbons with width up to seven C-C dimmers (7-AGNR-H). Our main focus is to investigate the effects of Fe and B doping on the spin transport properties of graphene nanoribbons. The substituted boron atoms at the nanoribbon edges suppress the semiconductor to metal transition. This substitutional B and Fe atoms respectively act as electrode and scattering region for the electronic transport along the nanoribbons. It is revealed that negative differential resistance (NDR) behavior and 86% spin filtering effect can be realized, which suggest that doped AGNR devices as the promising candidates in nanospintronics.
引用
收藏
页码：167 / 174
页数：8
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