Mixed-state quasiparticle spectrum for d-wave superconductors.
Mixed-state quasiparticle spectrum for d-wave superconductors.
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DOI：
10.1103/physrevb.52.r3876
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发表时间：
1995-05
期刊：
影响因子：
--
通讯作者：
Yong Wang;Allan H. MacDonald
中科院分区：
文献类型：
--
作者：
Yong Wang;Allan H. MacDonald
关于高{整数T}{次{整数c}}材料对对称性的争论引起了人们对{整数s}波和{整数d}波之间存在质的差异的超导体的可测量性质的兴趣。我们报道了{ital d}波和{ital s}波超导体在混合态下的微观电子特性的比较。我们的研究是基于具有{ital s}波和{ital d}波凝聚体的现象BCS模型的平均场Bogoliubov- de Gennes方程在没有磁场的情况下的自洽数值解。我们讨论了在涡旋核附近和远离涡旋核的{s}波和{d}波局域态密度的差异。讨论了扫描隧道显微测量和比热测量的实验意义。
Controversy concerning the pairing symmetry of high-{ital T}{sub {ital c}} materials has motivated an interest in those measurable properties of superconductors for which qualitative differences exist between the {ital s}-wave and {ital d}-wave cases. We report on a comparison between the microscopic electronic properties of {ital d}-wave and {ital s}-wave superconductors in the mixed state. Our study is based on self-consistent numerical solutions of the mean-field Bogoliubov--de Gennes equations for phenomenological BCS models which have {ital s}-wave and {ital d}-wave condensates in the absence of a magnetic field. We discuss differences between the {ital s}-wave and the {ital d}-wave local density of states, both near and away from vortex cores. Experimental implications for both scanning-tunneling-microscopy measurements and specific-heat measurements are discussed.