%0 Journal Article
%T Asymmetric Kondo resonance splitting transition in T-shaped coupled-quantum-dot devices<br>T型耦合双量子点系统的非对等Kondo共振分裂传输
%A Chen Xiong-Wen
%A Shi Zhen-Gang
%A Chen Ban-Ju
%A Song Ke-Hui
%A <br>谌雄文
%A 施振刚
%A 谌宝菊
%A 宋克慧
%J 物理学报
%D 2008
%I 
%X Using the slave-boson mean-field approximation, we theoretically study the transport properties of the ground state of the T-shaped coupled quantum dots with two metallic leads by means of one-impurity Anderson Hamiltonian. It is found that when this system is in the equilibrium state, with the increase of the inter-dot coupling, the Kondo resonance is suppressed, and the single Kondo peak of the density of the Kondo quantum dot is split into two asymmetric Kondo peaks. When it is in the non-equilibrium state, when increasing the bias, this asymmetric Kondo splitting is enhanced.
%K Kondo effect
%K density of states
%K Green function
%K double coupled quantum dots<br>Kondo效应，
%K 态密度，
%K 格林函数法，
%K 耦合双量子点
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=3C1BBA561539ABD72FECEB3B5DCEC6C9&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=E158A972A605785F&sid=19C6709C557F094B&eid=BC035D350257EF96&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=15