Transport Anomalies Associated with the Pseudogap From a Preformed Pair Perspective

Details Transport Anomalies Associated with the Pseudogap From a Preformed Pair Perspective Transport Anomalies Associated with the Pseudogap From a Preformed Pair Perspective

2011-12-21

arxiv.org/abs/1112.5098v1

Physics

Condensed Matter

Superconductivity

6 pages

Scientific paper

Transport studies seem to be one of the strongest lines of support for a preformed pair approach to the pseudogap. In this paper we provide a fresh, physically transparent look at two important quantities: the diamagnetic susceptibility and conductivity. We use a three dimensional preformed pair framework which has had some success in the cold Fermi gases and in the process we reconcile recently observed inconsistencies. Specifically, while the preformed pairs in our theory give a large contribution to the diamagnetic susceptibility, the imaginary part of the conductivity is suppressed to zero much closer to $T_c$, as is observed experimentally.

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