Superconducting and normal-state magnetic-susceptibility anisotropy in YBa2Cu3O7
W. C. Lee, D. C. Johnston
DOI 10.1103/PhysRevB.41.1904 · Physical Review B
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Abstract
Measurements of the superconducting and normal-state magnetic-susceptibility χ anisotropies of high-purity grain-aligned powder samples of YBa2Cu3O7 are reported. Excellent alignment was achieved using a noncontaminating in situ technique. We find a strong temperature-dependent anisotropy Δχ==χc-χab that decreases from positive values for T>Tc to negative values for T<Tc, consistent with reported torque-magnetometer measurements on single crystals. Estimates of the normal-state spin contributions to χ are obtained and compared with previous results.
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. | 90 | Pressure not reported | onset |
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