Enhanced Superconductivity in Superlattices of High-$T_c$ Cuprates

Details Enhanced Superconductivity in Superlattices of High-$T_c$ Cuprates Enhanced Superconductivity in Superlattices of High-$T_c$ Cuprates

2008-06-13

arxiv.org/abs/0806.2257v3

PRL 101, 156401 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.101.156401

The electronic properties of multilayers of strongly correlated models for cuprate superconductors are investigated using cluster dynamical mean-field techniques. We focus on combinations of underdoped and overdoped layers and find that the superconducting order parameter in the overdoped layers is enhanced by the proximity effect of the strong pairing scale originating from the underdoped layers. The enhanced order parameter can even exceed the maximum value in uniform systems. This behavior is well reproduced in slave-boson mean-field calculations which also find higher transition temperatures than in the uniform system.

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