Quantum Fluctuations and Dynamic Clustering of Fluctuating Cooper Pairs

Details Quantum Fluctuations and Dynamic Clustering of Fluctuating Cooper Pairs Quantum Fluctuations and Dynamic Clustering of Fluctuating Cooper Pairs

2010-06-21

arxiv.org/abs/1006.4124v1

EuroPhys. Lett. 94, 47005 (2011)

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures

Scientific paper

10.1209/0295-5075/94/47005

We derive exact expressions for the fluctuation conductivity in two dimensional superconductors as a function of temperature and magnetic field in the whole fluctuation region above the upper critical field H_{c2}(T). Focusing on the vicinity of the quantum phase transition near zero temperature, we propose that as the magnetic field approaches the line near H_{c2}(0) from above, a peculiar dynamic state consisting of clusters of coherently rotating fluctuation Cooper-pairs forms and estimate the characteristic size and lifetime of such clusters. We find the zero temperature magnetic field dependence of the the transverse magnetoconductivity above H_{c2}(0) in layered superconductors.

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