Enhanced superconducting proximity effect in strongly correlated heterostructures
Chun Chen, Yan Chen, Z. D. Wang, C. S. Ting
DOI 10.1103/PhysRevB.82.174502 · Physical Review B
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Abstract
The electronic properties of a strongly correlated heterostructure consisting of t−J layer and metallic layer have been investigated by using the Gutzwiller projected mean-field approximation. Considering the proximity effect due to the large pseudogap energy scale of t−J layer, a large superconducting gap could be induced on the metallic layer. This enhanced superconducting gap may be even larger than that of the t−J layer. Related physical quantities including spectral functions and density of states are obtained. The consequences of these results on experiments are discussed.
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