Intrinsic inhomogeneities in superconductors and the pseudogap phenomenon
- 24 January 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 63 (6), 064524
- https://doi.org/10.1103/physrevb.63.064524
Abstract
High- oxides are intrinsically inhomogeneous materials. The density of states is evaluated for such an inhomogeneous system, and it displays a gap structure above (pseudogap). Thus, the pseudogap phenomenon can be caused by an inhomogeneity of the metallic phase. As a result, the critical temperature is spatially dependent. Various types of nonuniform structure are described (inhomogeneous carrier distribution, nonuniform distribution of pair breakers). The transition to a dissipationless state corresponds to the percolation threshold.
Keywords
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