Real-space d-wave superconductivity from weak attraction
Pavel Kornilovitch
DOI 10.1103/PhysRevB.111.014506 · Physical Review B
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Abstract
It is shown that even a weak out-of-plane attraction, V→0, can form real-space pairs in the body-centered tetragonal lattice despite the presence of a Hubbard repulsion and a fully developed three-dimensional kinetic energy. In the hole channel, the pairs have d orbital symmetry, which, following Bogoliubov's argument, translates into a d-symmetric macroscopic superconducting order parameter. The findings help us to understand key features of La2−xSrxCuO4 and further support the real-space mechanism of superconductivity in cuprates. The rules of real-space superconductivity are formulated at the end.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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