Spin-filtering transport and switching effect of MnCu single-molecule magnet

被引：38
作者：
Hao, H.
Zheng, X. H.
Dai, Z. X.
Zeng, Z. [1 ]
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 19期
基金：
美国国家科学基金会;
关键词：
ab initio calculations; copper compounds; Kondo effect; magnetic switching; magnetoelectronics; manganese compounds; molecular electronics; molecular magnetism; organic compounds; MN-12; NANOMAGNETS; MAGNETIZATION;
D O I：
10.1063/1.3430063
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electron transport of a single-molecule magnet (SMM) device has been investigated using the first-principles calculations. The SMM based device is constructed by a SMM MnCu [MnCuCl(5-Br-sap)2(MeOH)] bridged between semi-infinite Au(100) electrodes with thiol groups connecting the molecule and the gold electrodes. Our results exhibit crucial features of spin filtering and Kondo resonance. The spin filtering remains robust, whereas the Kondo resonance highly depends on the contact geometry. Specifically, this Kondo resonance can be switched on or off by changing the contact distance. The mechanisms of these features are formulated in details. (C) 2010 American Institute of Physics. [doi:10.1063/1.3430063]
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页数：3
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