Thallium magnetic resonance in superconducting Tl2Ba2Ca2Cu3O10+δ
Moohee Lee, Y.-Q. Song, W. P. Halperin, Lauren M. Tonge, Tobin J. Marks, Henry O. Marcy, C. R. Kannewurf
DOI 10.1103/PhysRevB.40.817 · Physical Review B
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Abstract
Significant frequency shifts of the thallium nuclear-magnetic-resonance (NMR) spectrum have been observed in the super- conducting state of the high-temperature superconductor Tl2Ba2Ca2Cu3O10+δ. Measurements at two different magnetic fields indicate that the origin of these shifts is mainly due to the field distribution associated with vortices in the mixed state. The spin-lattice relaxation measurements are consistent with an anisotropic energy gap. The NMR linewidth varies significantly with temperature and magnetic field, apparently inconsistent with the BCS theory.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 109.5 | Pressure not reported | midpoint |
| Tl2Ba2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 107.5 | Pressure not reported | zero_resistance |
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