%0 Journal Article
%T Dynamical properties of quantum ring under the stepped pulse bias<br>阶梯电压下量子环的动力学性质
%A Guo Yan-Jiang
%A Xiong Yong-Jian
%A <br>郭延江
%A 熊永建
%J 物理学报
%D 2010
%I 
%X The dynamical properties of a one-dimensional quantum ring with a constant magnetic flux are studied using the non-equilibrium Green's function method. The ring is coupled through a single lead to an electron reservoir,which is driven by a stepped pulse bias. We provide a numerical method to calculate current in the presence of stepped bias. Our results reveal the relation between the evolution of tunneling current and electron energy levels of the ring.
%K quantum ring
%K tunneling current
%K energy level<br>量子环，
%K 遂穿电流，
%K 电子能谱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=FD5D11E4D6D81009D931925DBE873C36&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=CA4FD0336C81A37A&sid=AF4A4411BB448A36&eid=8966A0F1B07BE5EE&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0