Spin polarized current injection and transportation in a double T-shaped organic spintronic device  

作　　者：REN JunFeng SONG RuiRong YUAN XiaoBo HU GuiChao 

机构地区：[1]College of Physics and Electronics, Shandong Normal University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2015年第3期71-75,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.10904083 and 10904084);the Project of Shandong Provincial Higher Educational Science and Technology Program(Grant No.J13LA05);the Excellent Young Scholars Research Fund of Shandong Normal University

摘　　要：A double T-shaped device model is constructed to investigate the spin polarized current injection and transportation properties in organic semiconductors.Based on the spin diffusion theory and Ohm’s law and considering the different charge-spin relationship of the special carriers in organic semiconductors,the current spin polarization has been obtained.Effects of the branch current ratio and the polaron proportion on the spin polarized current injection efficiency are studied.From the calculation,it is found that the improvement of the spin polarized current injection efficiency can be obtained by adjusting the branch current ratio;moreover,high polaron proportion in organic semiconductors is beneficial for obtaining high current spin polarization.A double T-shaped device model is constructed to investigate the spin polarized current injection and transportation properties in organic semiconductors. Based on the spin diffusion theory and Ohm＇s law and considering the different charge-spin rela- tionship of the special carriers in organic semiconductors, the current spin polarization has been obtained. Effects of the branch current ratio and the polaron proportion on the spin polarized current injection efficiency are studied. From the calculation, it is found that the improvement of the spin polarized current injection efficiency can be obtained by adjusting the branch current ratio; moreover, high polaron proportion in organic semiconductors is beneficial for obtaining high current spin polarization.

关 键 词：organic spintronics spin polarized current injection current spin polarization 

分 类 号：O469[理学—凝聚态物理]