Specific heat in the mixed state of superconducting YBa2Cu3O7−x
S. B. Ota
DOI 10.1103/PhysRevB.43.1237 · Physical Review B
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Abstract
It is shown that the observed magnetic-field dependence of the specific-heat anomaly near the superconducting transition temperature Tc of YBa2Cu3O7−x can be understood quantitatively by the Ginzburg-Landau theory of anisotropic type-II superconductors. It is shown, in the London limit, that the change in specific heat by the application of magnetic field Ba(∼1T) is approximately linear in (Ba/Tc)[t/(1-t)] for temperatures slightly below Tc, where t=T/Tc. It is also predicted that the slope of this linear behavior for Ba⊥c axis should be (mc/mab)1/2 times lower than that for Ba∥c axis. Here, mc and mab are the components of the effective-mass tensor parallel and perpendicular to the c axis, respectively.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90.83 | Pressure not reported | unknown |
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