Magnetic-field dependence of planar copper and oxygen spin-lattice relaxation rates in the superconducting state of YBa2Cu3O7
J. A. Martindale, S. E. Barrett, K. E. O’Hara, C. P. Slichter, W. C. Lee, D. M. Ginsberg
DOI 10.1103/PhysRevB.47.9155 · Physical Review B
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Abstract
The authors report nuclear spin-lattice relaxation rates, W1, for planar copper and oxygen sites in the superconducting state of YBa2Cu3O7. These measurements were made with the static magnetic field along the c axis at a variety of static magnetic-field strengths. The data show that the relaxation rate of O17 depends on magnetic-field strength at low temperature and confirm a similar result for Cu63. The importance of these measurements is that they give the zero-field limit necessary for comparison with theory. The weak-field data at low temperature for both copper and oxygen have a temperature dependence close to T3, which is the result expected for spin-singlet, orbital d-wave pairing and does not seem compatible with orbital s-wave pairing.
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. | 92.5 | Pressure unresolved | unknown |
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu4O8 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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