Effect of different conductivity between the spin polarons on spin injection in a ferromagnet/organic semiconductor system

被引：14

作者：

Mi, Yilin ^{[1
,2
]}

Zhang, Ming ^{[1
]}

Yan, Hui ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China

[2] N China Univ Technol, Coll Sci, Beijing 100041, Peoples R China

来源：

PHYSICS LETTERS A | 2008年 / 372卷 / 20期

基金：

中国国家自然科学基金;

关键词：

spin-dependent conductivity; spin injection efficiency; spin polarization;

D O I：

10.1016/j.physleta.2008.02.036

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spin injection across ferromagnet/organic semiconductor system with finite width of the layers was studied theoretically considering spin-dependent conductivity in the organic-semiconductor. It was found that the spin injection efficiency is directly dependent on the difference between the conductivity of the up-spin and down-spin polarons in the spin-injected organic system. Furthermore, the finite width of the structure, interfacial electrochemical-potential and conductivity mismatch have great influence on the spin injection process across ferromagnet/organic semiconductor interface. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3734 / 3737

页数：4

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