%0 Journal Article
%T Fano versus Kondo Resonances in a Closed Aharonov--Bohm Interferometer Coupled to Ferromagnetic Electrodes<br>Fano versus Kondo Resonances in a Closed Aharonov-Bohm Interferometer Coupled to Ferromagnetic Electrodes
%A WU Shao-Quan
%A SUN Wei-Li
%A <br>吴绍全
%A 孙威立
%J 中国物理快报
%D 2007
%I 
%X Using the Keldysh nonequilibrium Green function and equation-of-motion technique, we investigate Fano versus Kondo resonances in a closed Aharonov-Bohm interferometer coupled to ferromagnetic leads and study their effects on the conductance of this system. The conductance with both parallel and antiparallel lead-polarization alignments is analysed for various values of the magnetic flux. Our results show that this system can provide an excellent spin filtering property, and a large tunnelling magnetoresistance can arise by adjusting the system parameters, which indicates that this system is a possible candidate for spin valve transistors and has important applications in spintronics.
%K 72
%K 19
%K Fk
%K 72
%K 15
%K Qm
%K 73
%K 23
%K Ra<br>量子干涉
%K 量子光学
%K 量子相干
%K 量子阱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=A6F1F92187EC7BB81FA4FEB62162AA94&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=E158A972A605785F&sid=1A775ABEB80E436B&eid=C6E83222BCBFFFF8&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0