Critical fluctuations and lowest-Landau-level scaling of the specific heat of high-temperature superconductors
Stephen W. Pierson, Thomas M. Katona, Zlatko Tes̆anović, Oriol T. Valls
DOI 10.1103/PhysRevB.53.8638 · Physical Review B
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Abstract
The specific heat data of various high-temperature superconducting materials at finite magnetic field and temperatures near the transition temperature are studied. It is found that lowest-Landau-level (LLL) scaling is a good description of the data for fields larger than a characteristic field H*∼O(1 T) and that it breaks down for fields less than H*. The scaled data agrees very well with the calculated scaling functions, which provides further evidence for the validity of LLL theory at fields H≥H*. The dimensionality of the fluctuations is also studied and it is found that they are predominantly three dimensional near the transition with indications of crossover to two-dimensional behavior farther away.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.9 | Pressure not reported | unknown |
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93.3 | Pressure not reported | unknown |
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90.6 | Pressure not reported | unknown |
| LuBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92.6 | Pressure not reported | unknown |
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92.6 | Pressure not reported | unknown |
| Bi2Sr2Ca2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 107.5 | Pressure not reported | unknown |
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