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TOD

Seminar

Topological solitons in multi-component superconductors : from baby-Skyrmions to vortex loops

Garaud, J (UMass Amherst and KTH Stockholm )
Friday 07 December 2012, 15:10-15:25

Seminar Room 1, Newton Institute

Abstract

The crucial importance of topological excitations in the physics of superconductivity made Ginzburg--Landau vortices one of the most studied example of topological defects. Multi-band/multi-component superconductors extends usual Ginzburg--Landau theory by considering more than one scalar field (several superconducting order parameters).

Family materials, 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 entropic reasons, thermal fluctuations will induce much more complicated three dimensional solitons, in particular vortex loops.

I will discuss various aspects of topological excitations in multi-component/multi-band superconductors.

Presentation

[pdf ] [zip ]

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