Thursday's seminar

[CM ICTP - Trieste]

SEMINAR on   Disorder and strong electron correlations



Thursday, 20 November      -  11:00 a.m.



Seminar Room,  Leonardo Building - first floor



P. ZHANG  (Institute of Modern Physics, Lanzhou)



"Topological objects in  two-gap superconductor"



Abstract

We discuss topological objects, in particular the non-Abrikosov  
vortex and the magnetic knot made of the twisted non-Abrikosov  
vortex, in two-gap superconductor.  We show that there are two types  
of non-Abrikosov vortex in Ginzburg-Landau theory of two-gap  
superconductor, the D-type which has no concentration of the  
condensate at the core and the N-type which has a non-trivial profile  
of the condensate at the core, under a wide class of realistic  
interaction potential. Furthermore, with the Josephson interaction we  
get the vortex molecule which is different from the axisymmetric vortex.