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Spontaneous inhomogeneity in disordered superconducting films

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Presentation on theme: "Spontaneous inhomogeneity in disordered superconducting films"— Presentation transcript:

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

2 Two mechanism of superconductivity suppression

3

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

5 Outline

6 Coulomb + disorder in 2D superconducting films

7 Coulomb suppression of Tc
clean dirty

8 Two equivalent approaches (RG or not RG)

9 Mean-field structure of the superconducting state

10 Mesoscopic fluctuations
PLAN

11 Mesoscopic fluctuations

12 Correlation functions

13 Correlation function of D

14 Correlation function of D

15 Vicinity of Tc

16 Vicinity of Tc

17 Mesoscopic vs. thermal fluctuations near Tc

18 Low temperatures

19 Superconductor with fluctuating D(r)

20 Superconductor with fluctuating D(r)

21 Conclusion FERMIONIC MECHANISM BOSONIC MECHANISM

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