Low Temperature Specific Heat of the Underdoped La2-x Srx CuO4 Single Crystals
LIU Zhi-Yong, YANG Hai-Peng, LU Xi-Feng, ZHOU Fang, WEN Hai-Hu
National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080
Low Temperature Specific Heat of the Underdoped La2-x Srx CuO4 Single Crystals
LIU Zhi-Yong;YANG Hai-Peng;LU Xi-Feng;ZHOU Fang;WEN Hai-Hu
National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080
关键词 ：
74.20.Rp ,
74.25.Dw ,
74.25.Fy ,
74.72.Dn
Abstract ： We report the low-temperature specific heat of La2-x Srx CuO4 (x = 0.063) single crystals before and after annealing in the temperature region of 2-10 K and magnetic fields up to 12 T. The data confirm the √H dependence of the linear term coefficient γ predicted for d-wave paring in the Volovik theory at T = 0 K. However, the data do not satisfy the proposed Simon-Lee scaling law at finite temperatures, i.e., CDOS /(T2 ) = f(T/√H), where f is an unknown scaling function and CDOS is the extra specific heat contributed by the nodal quasiparticles due to the Doppler effect. Possible reasons for this failure are presented.
Key words ：
74.20.Rp
74.25.Dw
74.25.Fy
74.72.Dn
出版日期: 2004-02-01
引用本文:
LIU Zhi-Yong;YANG Hai-Peng;LU Xi-Feng;ZHOU Fang;WEN Hai-Hu. Low Temperature Specific Heat of the Underdoped La2-x Srx CuO4 Single Crystals[J]. 中国物理快报, 2004, 21(2): 374-377.
2-x Srx CuO4 Single Crystals. Chin. Phys. Lett., 2004, 21(2): 374-377.
链接本文:
https://cpl.iphy.ac.cn/CN/
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https://cpl.iphy.ac.cn/CN/Y2004/V21/I2/374
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2004, Vol. 21 
