Abstract
In high-Tc superconductors (La1–xMx)2CuO4 (M = Ba, Sr), it has been reported that the heat capacity has a nonzero coefficient γ in the temperature linear term. We investigated the detailed dependence of γ on Ba doping. It was confirmed that γ becomes zero for undoped La2CuO4. With increasing Ba concentration x, γ increases markedly up to x=0.02 where the magnetic order almost disappears, while it decreases as superconductivity starts to appear and then has a minimum around x=0.04. With further increasing x, γ increases again. These results may be due to a combined effect of two different contributions to γ.
| Original language | English |
|---|---|
| Pages (from-to) | 2261-2263 |
| Number of pages | 3 |
| Journal | journal of the physical society of japan |
| Volume | 57 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jan 1 1988 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Kobayashi, T., Kumayasu, S., Amaya, K., Ishida, K., Kitaoka, Y., & Asayama, K. (1988). Existence of the Minimum Coefficient in Temperature Linear Term of Heat Capacity in Superconducting (La1–xBax)2CuO4. journal of the physical society of japan, 57(7), 2261-2263. https://doi.org/10.1143/JPSJ.57.2261