Superconductivity in nanostructures: Smaller is different and maybe holographic

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• Dr Antonio Garcia-Garcia, U of Cambridge
• Thursday 25 October 2012, 13:45-15:00
• Theory Library.

If you have a question about this talk, please contact Dr Dimitri M Gangardt.

In the first part of the talk I review recent experimental and theoretical advances in the problem of superconductivity in nanostructures. In the second part I put forward a rigorous treatment of the combined effect of thermal and quantum fluctuations in a zero-dimensional superconductor. Divergences that plagued previous calculations are avoided by identifying and treating nonperturbatively a low-energy collective mode. In this way, we obtain for the first time closed expressions for the partition function and the superconducting order parameter which include both types of fluctuation and are valid at any temperature. Our results pave the way for a quantitative description of superconductivity in nanostructures at finite temperature and pairing in hot nuclei. Finally I briefly overview the use of AdS/CFT techniqes to describe the physics of strongly coupled superconductors in confined geometries.

This talk is part of the Theoretical Physics Seminars series.

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• Bham Talks
• Theoretical Physics Seminars
• Theory Library
• What's on in Physics?

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