TY - JOUR
T1 - Existence of the Minimum Coefficient in Temperature Linear Term of Heat Capacity in Superconducting (La1–xBax)2CuO4
AU - Kobayashi, Tatsuo
AU - Kumayasu, Satoshi
AU - Amaya, Kiichi
AU - Ishida, Kenji
AU - Kitaoka, Yoshio
AU - Asayama, Kunisuke
PY - 1988/1/1
Y1 - 1988/1/1
N2 - 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.
AB - 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.
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U2 - 10.1143/JPSJ.57.2261
DO - 10.1143/JPSJ.57.2261
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 -