University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Topological solitons in multi-component superconductors : from baby-Skyrmions to vortex loops

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

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Topological Dynamics in the Physical and Biological Sciences

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.

This talk is part of the Isaac Newton Institute Seminar Series series.

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