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SUMMARY:Topological solitons in multi-component superconductors : from bab
 y-Skyrmions to vortex loops - Garaud\, J (UMass Amherst and KTH Stockholm 
 )
DTSTART:20121207T151000Z
DTEND:20121207T152500Z
UID:TALK41924@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The crucial importance of topological excitations in the physi
 cs of superconductivity made Ginzburg--Landau vortices one of the most stu
 died example of topological defects. Multi-band/multi-component supercondu
 ctors extends usual Ginzburg--Landau theory by considering more than one s
 calar field (several superconducting order parameters). \n\nFamily materia
 ls\, where superconductivity is multi-band/multi-component\, has recently 
 been growing. Because of additional fields and new broken symmetries\, the
  zoo of topological defects is much richer in multi-component systems (e.g
 . Line-like vortices\, fractional vortices\, baby skyrmions...). For entro
 pic reasons\, thermal fluctuations will induce much more complicated three
  dimensional solitons\, in particular vortex loops. \n\nI will discuss var
 ious aspects of topological excitations in multi-component/multi-band supe
 rconductors. \n
LOCATION:Seminar Room 1\, Newton Institute
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