Volume 104, Number 5, December 2013
|Number of page(s)||5|
|Published online||23 December 2013|
Spin-valve giant magnetoresistance in scandium-benzene sandwich cluster
1 Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology - Taiyuan 030024, China
2 College of Physics and Optoelectronics, Taiyuan University of Technology - Taiyuan 030024, China
3 Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology - Taiyuan 030024, China
4 College of Chemistry and Chemical Engineering, Taiyuan University of Technology - Taiyuan 030024, China
5 National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University Nanjing 210093, China
Received: 23 June 2013
Accepted: 9 December 2013
Using density functional theory and non-equilibrium Green's function method, we investigate the magnetic and transport properties of organic Scn(C6H6)n+1 () sandwich clusters. The results show that the sandwiches possess high stabilities and large magnetic moments, and our prediction is in agreement with the experimental observation. With Ni as two electrodes, significant spin-valve giant magnetoresistance was found in Sc3(C6H6)4 molecular junction. Furthermore, all the sandwiches can be viewed as a new kind of spin filter. Specially, by changing the magnetization orientation of one electrode, Sc2(C6H6)3 molecular junction could effectively control the spin orientation of the electron in the system.
PACS: 05.60.Gg – Quantum transport
© EPLA, 2013
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