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Effects of Weak and Strong Scatterers on the Spectra of Vortex Andreev Bound States in Two-Dimensional Chiral p-Wave Superconductors
The vortices of two-dimensional chiral p-wave superconductors are predicted to exhibit some exotic behaviors; one of their curious features is the existence of two types of vortices (each vortex has vorticity either parallel or antiparallel to the Cooper pair's chirality) and the robustness of...
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Published in: | Journal of the Physical Society of Japan 2015-11, Vol.84 (11), p.1-1 |
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description | The vortices of two-dimensional chiral p-wave superconductors are predicted to exhibit some exotic behaviors; one of their curious features is the existence of two types of vortices (each vortex has vorticity either parallel or antiparallel to the Cooper pair's chirality) and the robustness of the antiparallel vortices against nonmagnetic Born-like impurities. In this work, we study the impurity effect on the vortex of the chiral p-wave superconductors through the quasiclassical Green's function formalism. We take account of impurities via the self-consistent t-matrix approximation so that we can deal with strong as well as Born-like (i.e., weak) scatterers. We found that the spectrum is heavily broadened when the phase shift ... of each impurity exceeds a critical value ... above which the impurity band emerges at the Fermi level. We also found a quantitative difference in the impurity effects on the two types of vortex for ... Part of the numerical results for ... can be understood by a variant of the analytical theory of Kramer and Pesch for bound states localized within vortex cores. (ProQuest: ... denotes formulae/symbols omitted.) |
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In this work, we study the impurity effect on the vortex of the chiral p-wave superconductors through the quasiclassical Green's function formalism. We take account of impurities via the self-consistent t-matrix approximation so that we can deal with strong as well as Born-like (i.e., weak) scatterers. We found that the spectrum is heavily broadened when the phase shift ... of each impurity exceeds a critical value ... above which the impurity band emerges at the Fermi level. We also found a quantitative difference in the impurity effects on the two types of vortex for ... Part of the numerical results for ... can be understood by a variant of the analytical theory of Kramer and Pesch for bound states localized within vortex cores. 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In this work, we study the impurity effect on the vortex of the chiral p-wave superconductors through the quasiclassical Green's function formalism. We take account of impurities via the self-consistent t-matrix approximation so that we can deal with strong as well as Born-like (i.e., weak) scatterers. We found that the spectrum is heavily broadened when the phase shift ... of each impurity exceeds a critical value ... above which the impurity band emerges at the Fermi level. We also found a quantitative difference in the impurity effects on the two types of vortex for ... Part of the numerical results for ... can be understood by a variant of the analytical theory of Kramer and Pesch for bound states localized within vortex cores. 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subjects | Effects Fluid flow Impurities Mathematical analysis Matrix Phase shift Scattering Spectrum analysis Superconductors Symbols Two dimensional Vortices |
title | Effects of Weak and Strong Scatterers on the Spectra of Vortex Andreev Bound States in Two-Dimensional Chiral p-Wave Superconductors |
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