Evidence for dx2-y2 pairing from nuclear-magnetic-resonance experiments in the superconducting state of YBa2Cu3O7
D. Thelen, D. Pines, Jian Ping Lu
DOI 10.1103/PhysRevB.47.9151 · Physical Review B
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Abstract
We calculate the electron spin susceptibility for the superconducting state of YBa2Cu3O7 using a band structure with nearest- and next-nearest-neighbor hopping, a momentum-dependent spin-spin interaction, and a superconducting gap with dx2-y2 symmetry. Our calculated nuclear magnetic relaxation rates and Knight shift agree favorably with experiment. Our work provides further evidence for a dx2-y2 pairing state and demonstrates that antiferromagnetic correlations persist in the superconducting state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
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