Bulk superconductivity at 36 K in La1.8Sr0.2CuO4
J. V. Yakhmi, I. K. Gopalakrishnan, L. C. Gupta, A. M. Umarji, R. Vijayaraghavan, R. M. Iyer
DOI 10.1103/PhysRevB.35.7122 · Physical Review B
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Abstract
Cava, van Dover, Batlogg, and Rietman [Phys. Rev. Lett. 58, 408 (1987)] have reported bulk superconductivity at 36 K in La1.8Sr0.2CuO4 which is the highest reported bulk superconducting transition temperature at the writing of this paper. This discovery came in the wake of reported possible high-Tc superconductivity in a mixture of crystalline phases of the Ba-La-Cu-O system by Bednorz and Muller [Z. Phys. B 64, 189 (1986)]. We have also observed superconductivity in samples of La1.8Sr0.2CuO4. The purpose of this paper is to describe briefly the results of our own measurements on this system. We find that our results are in very good agreement with those of Cava et al.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.8Sr0.2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 36 | Pressure not reported | onset |
| La1.8Sr0.2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 32.2 | Pressure not reported | midpoint |
| La1.8Sr0.2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38 | Pressure not reported | onset |
| La1.8Sr0.2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 33 | Pressure not reported | midpoint |
| La1.8Sr0.2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 36 | Pressure not reported | unknown |
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