Specific heat of La1.8Sr0.2CuO4: Anomaly at the superconducting transition
G. Nieva, E. N. Martinez, F. de la Cruz, D. A. Esparza, C. A. D'Ovidio
DOI 10.1103/PhysRevB.36.8780 · Physical Review B
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Abstract
We have measured the specific heat of La1.8Sr0.2CuO4 between 4 and 60 K. We found a step in the specific heat ΔC(Tc)Tc=33 mJ/molK2, and a linear term at low temperatures with a slope γ′=4±2 mJ/molK2. From these results we conclude that the Sommerfeld parameter for the conduction electrons is γ=18±2 mJ/molK2.
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. | 41.5 | Pressure not reported | onset |
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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