%0 Journal Article
%T Warp of the Invariant Circle and Onset of Chaos in Josephson Junction Equation
%A QIAN Min
%A WANG Jia-Zeng
%A <br>钱敏
%A 王家赠
%J 中国物理快报
%D 2007
%I 
%X The dynamics of the dc and ac driving Josephson junction equation is studied in terms of the two-dimensional Poincaré map. The smooth invariant circle on the phase cylinder in over-damped case a ） 2 loses smoothness as a decreases and becomes a strange attractor eventually. This triggers two kinds of chaos, one occurs in the regions between two Arnold tongues and the other occurs within the tongues.
%K 05
%K 45
%K Pq
%K 05
%K 45
%K Ac
%K 74
%K 50
%K +r<br>不变量圆
%K 约瑟夫森效应
%K 混沌理论
%K 方程式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D480818EEE3DEFD1361698A&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=DF92D298D3FF1E6E&sid=2361597FE1CEC89F&eid=47AB527E821B9862&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0