Quasiparticle spectra in the vicinity of a d-wave vortex
Quasiparticle spectra in the vicinity of a d-wave vortex
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DOI：
10.1103/physrevb.60.3581
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发表时间：
1998-12
影响因子：
3.7
通讯作者：
M. Franz;Z. Tes̆anović
中科院分区：
文献类型：
--
作者：
M. Franz;Z. Tes̆anović
我们讨论了局域准粒子谱密度的演化和相关的隧道电导可测量的扫描隧道显微镜，作为一个函数的距离r和角度u从dx 22 y2超导体的涡旋核心。我们认为电子无序和一个强各向异性隧穿矩阵元素的影响，并表明，在真实的材料，他们可能会掩盖;1/r渐近尾零偏置隧道电导预期从简单的半经典分析。我们也给出了一个预测的隧穿电导各向异性周围的涡核，并建立了连接的隧穿矩阵元的结构。@S0163-1829~99！11329-8#
We discuss the evolution of the local quasiparticle spectral density and the related tunneling conductance measurable by the scanning tunneling microscope, as a function of distance r and angle u from the vortex core in a dx22y 2 superconductor. We consider the effects of electronic disorder and of a strongly anisotropic tunneling matrix element, and show that in real materials they will likely obscure the ;1/r asymptotic tail in the zero-bias tunneling conductance expected from the straightforward semiclassical analysis. We also give a prediction for the tunneling conductance anisotropy around the vortex core and establish a connection to the structure of the tunneling matrix element. @S0163-1829~99!11329-8#