%0 Journal Article
%T Simulation of Dynamics in Two-Dimensional Vortex Systems in Random Media<br>
%A ZHANG Wei
%A SUN Li-Zhen
%A LUO Meng-Bo
%A <br>
%J 中国物理快报
%D 2009
%I 
%X Dynamics in two-dimensional vortex systems with random pinning centres is investigated using molecular dynamical simulations. The driving force and temperature dependences of vortex velocity are investigated. Below the critical depinning force Fc, a creep motion of vortex is found at low temperature. At forces slightly above Fc, a part of vortices flow in winding channels at zero temperature. In the vortex channel flow region, we observe the abnormal behaviour of vortex dynamics: the velocity is roughly independent of temperature or even decreases with temperature at low temperatures. A phase diagram that describes different dynamics of vortices is presented.
%K 74
%K 25
%K Qt
%K 74
%K 25
%K Fy<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=C3E30FFC4C7E100394357476E854BC66&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0