Spin-liquid model of the sharp drop in resistivity in superconducting La1.85Ba0.125CuO4
A. V. Chubukov, A. M. Tsvelik
DOI 10.1103/PhysRevB.76.100509 · Physical Review B
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Abstract
We use the phenomenological model proposed in our previous paper [Phys. Rev. Lett. 98, 237001 (2007)] to analyze the magnetic-field dependence of the onset temperature for two-dimensional fluctuating superconductivity T**(H). We demonstrate that the slope of T**(H) progressively goes down as H increases, such that the upper critical field progressively increases as T decreases. Quantitative agreement with the recent measurements of T**(H) in La1.85Ba0.125CuO4 is achieved for the same parameter value as was derived in our previous publication from the analysis of the electron self-energy.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Ba0.125CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16 | Pressure not reported | midpoint |
| La1.85Ba0.125CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4 | Pressure not reported | zero_resistance |
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