Enhanced superconductivity in superlattices of high-Tc cuprates
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...
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| Veröffentlicht in: | Physical review letters 2008-10, Vol.101 (15), p.156401-156401 |
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| container_title | Physical review letters |
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| creator | Okamoto, Satoshi Maier, Thomas A |
| description | 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. |
| doi_str_mv | 10.1103/PhysRevLett.101.156401 |
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| language | eng |
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| source | American Physical Society Journals |
| title | Enhanced superconductivity in superlattices of high-Tc cuprates |
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