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有机铁磁界面自旋极化接触构型效应
李营,张广平,谢震,张朝,任俊峰,王传奎,胡贵超
作者单位E-mail
李营   
张广平 
山东师范大学物理与电子科学学院
, 济南 250014
 
 
谢震 
山东师范大学物理与电子科学学院
, 济南 250014
 
 
张朝 
山东师范大学物理与电子科学学院
, 济南 250014
 
 
任俊峰 
山东师范大学物理与电子科学学院
, 济南 250014
 
 
王传奎 
山东师范大学物理与电子科学学院
, 济南 250014
 
 
胡贵超 
山东师范大学物理与电子科学学院
, 济南 250014
 
hgc@sdnu.edu.cn 
摘要:
关键词:  
DOI:10.1063/1674-0068/29/cjcp1511230
分类号:
基金项目:This work was supported by the National Natu-ral Science Foundation of China (No.11374195 and No.11405098), the Natural Science Foundation of Shandong Province (No.ZR2014AM017), the Taishan Scholar Project of Shandong Province, and the Excel-lent Young Scholars Research Fund of Shandong Nor-mal University.
Spin Polarization at Organic-Ferromagnetic Interface: E ect of Contact Con guration
Ying Li,Guang-ping Zhang,Zhen Xie,Zhao Zhang,Jun-feng Ren,Chuan-kui Wang,Gui-chao Hu
Abstract:
Based on ab initio theory, the interfacial spin polarization of a benzene-dithiolate molecule vertically adsorbed on a nickel surface is investigated by adopting di erent microscopic con-tact con gurations. The results demonstrate a strong dependence of the interfacial spin polarization on the contact con guration, where the sign of spin polarization may vary from positive to negative with the change of contact con guration. By analyzing the projected density of states, an interfacial orbital hybridization between the 3d orbital of the nickel atom and the sp3 hybridized orbital of the sulfur atom is observed. We also simulated the interfacial adsorption in mechanically controllable break junction experiments. The magne-toresistance obtained from Julliere model is about 27% based on the calculated interfacial spin polarization, which is consistent with experimental measurement.
Key words:  Organic spintronics  Spin polarization  Interface  Contact con guration