Physics – Condensed Matter – Superconductivity
Scientific paper
1997-10-29
Physics
Condensed Matter
Superconductivity
5 pages, Latex file, 1 ps figure file
Scientific paper
It is shown that the patches of complex d_{xy} component are generated around magnetic impurity in the presence of the coupling between orbital moment of the condensate and impurity spin S. Locally induced d_{xy} gap leads to the fully gapped quasiparticle spectrum near impurity. The phase of the induced i d_{xy} component is determined by impurity spin and averages to zero at high temperatures. It is suggested that at low temperature the well defined patches of d_{xy} are formed and they can undergo a phase transition into phase locked state via Josephson effect. Violation of time-reversal symmetry and parity occurs spontaneously via the second order transition. In the ordered phase both impurity magnetization and d_{xy} component of the order parameter develop and are proportional to each other.
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