標題: Impurity scattering effects on the low-temperature specific heat of d-wave superconductors
作者: Chang, CF
Lin, JY
Yang, HD
物理研究所
Institute of Physics
公開日期: 1-Jun-2000
摘要: Recently, impurity scattering effects on quasiparticles in d-wave superconductors have attracted much attention. In particular, the thermodynamic properties in magnetic fields are of interest. We have measured the low-temperature specific heat C(T,H) of La1.78Sr0.22Cu1-xNixO4. The impurity scattering effects on C(T,H) of cuprate superconductors were clearly observed and are compared with the theory of d-wave superconductivity. It is found that impurity scattering leads to the relation gamma(H) = gamma(o)[1 + D(H/H-c2)ln(H-c2/H)] in small magnetic fields. Surprisingly, the sealing of C(T,H) is broken down by impurity scattering.
URI: http://dx.doi.org/10.1103/PhysRevB.61.14350
http://hdl.handle.net/11536/30474
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.61.14350
期刊: PHYSICAL REVIEW B
Volume: 61
Issue: 21
起始頁: 14350
結束頁: 14353
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