Abstract
In high-Tc superconductors (La1-xMx) 2CuO4 (M=Ba, Sr), it has been reported that the heat capacity has a nonzero coefficient y 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 |
| Publication status | Published - Jul 1988 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Existence of the minimum coefficient in temperature linear term of heat capacity in superconducting (La1-xBax)2CuO 4. / Kobayashi, Tatsuo; Kumayasu, Satoshi; Amaya, Kiichi; Ishida, Kenji; Kitaoka, Yoshio; Asayama, Kunisuke.
In: Journal of the Physical Society of Japan, Vol. 57, No. 7, 07.1988, p. 2261-2263.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Existence of the minimum coefficient in temperature linear term of heat capacity in superconducting (La1-xBax)2CuO 4
AU - Kobayashi, Tatsuo
AU - Kumayasu, Satoshi
AU - Amaya, Kiichi
AU - Ishida, Kenji
AU - Kitaoka, Yoshio
AU - Asayama, Kunisuke
PY - 1988/7
Y1 - 1988/7
N2 - In high-Tc superconductors (La1-xMx) 2CuO4 (M=Ba, Sr), it has been reported that the heat capacity has a nonzero coefficient y 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.
AB - In high-Tc superconductors (La1-xMx) 2CuO4 (M=Ba, Sr), it has been reported that the heat capacity has a nonzero coefficient y 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=77952972952&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:77952972952
VL - 57
SP - 2261
EP - 2263
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 7
ER -