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Spontaneous inhomogeneity in disordered superconducting films

Spontaneous inhomogeneity in disordered superconducting films. Mikhail Skvortsov Mikhail Feigelman Landau Institute, Moscow. Leiden, 26 Aug 2011. Two mechanism of superconductivity suppression. Coulomb suppression of T c & mesoscopic fluctuations.

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Spontaneous inhomogeneity in disordered superconducting films

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  1. Spontaneous inhomogeneity in disordered superconducting films Mikhail Skvortsov Mikhail Feigelman Landau Institute, Moscow Leiden, 26 Aug 2011

  2. Two mechanism ofsuperconductivitysuppression

  3. Coulomb suppression of Tc & mesoscopic fluctuations Can these tiny mesoscopic fluctuations become important?

  4. Outline

  5. Coulomb + disorder in 2D superconducting films

  6. clean dirty Coulomb suppression ofTc

  7. Two equivalent approaches (RG or not RG)

  8. Mean-field structure of the superconducting state

  9. PLAN Mesoscopic fluctuations

  10. Mesoscopic fluctuations

  11. Correlation functions

  12. Correlation function of D

  13. Correlation function of D

  14. Vicinity of Tc

  15. Vicinity of Tc

  16. Mesoscopic vs. thermal fluctuations near Tc

  17. Low temperatures

  18. Superconductor with fluctuating D(r)

  19. Superconductor with fluctuating D(r)

  20. Conclusion FERMIONIC MECHANISM BOSONIC MECHANISM

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