Fluctuations in Two-Dimensional Superconductors and Pseudogap Phenomenon
CMSA EVENTS: CMSA QUANTUM MATTER IN MATH & PHYSICS SEMINAR
We study the phase fluctuations in the normal state of a general two-dimensional (2d) superconducting system with s-wave pairing. The effect of phase fluctuations of the pairing fields can be dealt with perturbatively using disorder averaging, after we treat the local superconducting order parameter as a static disordered background. It is then confirmed that the phase fluctuations above the 2d Berenzinskii-Kosterlitz-
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