標題: Magnetic-field dependence of the low-temperature specific heat of La2-xSrxCuO4
作者: Chen, SJ
Chang, CF
Tsay, HL
Yang, HD
Lin, JY
物理研究所
Institute of Physics
公開日期: 1-Dec-1998
摘要: Recently, possible evidence from the low-temperature specific heat (LTSH) for the lines of nodes in the superconducting order parameter of cuprate superconductors has attracted much attention and is still debated. To clarify this issue and to cover the studies in different carrier doping regimes, we have measured LTSH of La2-xSrxCuO4 (s = 0.10, 0.16, and 0.22) both in zero and applied magnetic fields. In all doping regimes, it is found that the increase in the Linear-T coefficient gamma is proportional to H-1/2, consistent with d-wave supercon ductivity. The data shows clear evidence for an alpha T-2 term at zero magnetic field in LTSH of La1.78Sr0.22CuO4. Furthermore, our results are compared with the recently proposed scaling theory.
URI: http://dx.doi.org/10.1103/PhysRevB.58.R14753
http://hdl.handle.net/11536/147968
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.58.R14753
期刊: PHYSICAL REVIEW B
Volume: 58
Issue: 22
起始頁: 14753
結束頁: 14756
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