Quasiparticle spectra in the vicinity of a d-wave vortex

Abstract

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 θfrom the vortex core in a d_{x^2-y^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.

arXiv comment9 pages REVTeX + 5 PostScript figures. For related work and info visit http://www.pha.jhu.edu/~franz

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Cited by in corpus (13)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Four-fold structure of vortex core states in Bi2Sr2CaCu2O8 (Bi2212)
• Modeling scanning tunneling spectra of $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$
• Spectrum of low energy excitations in the vortex state: comparison of Doppler shift method to quasiclassical approach
• Quasiparticle excitation in and around the vortex core of underdoped YBa_2Cu_4O_8 studied by site-selective NMR
• Quasiclassical theory of superconducting states under magnetic fields: Thermodynamic properties
• Aharonov-Bohm Effect for Quasiparticles around a Vortex Line in a D-wave Superconductor
• The Density of States in High-Tc Superconductors Vortices
• Absence of the zero bias peak in vortex tunneling spectra of high temperature superconductors?
• Magnetic Field Induced Low-Energy Spin Excitations in YBa2Cu4O8 Measured by High Field Gd3+ ESR
• Doppler shift on local density of states and local impurity scattering in the vortex state
• Theory of vortex lattice effects on STM spectra in d-wave superconductors
• Combined Paramagnetic and Diamagnetic Response of YBCO