Bound States Induced by an Extended Impurity Scattering in an Unconventional Superconductor

다국어 초록 (Multilingual Abstract)

We study the eect of an extended impurity scattering on the bound state in an unconventional superconductor.
We compute the resonance energy of the bound state by varying the depth and the width of a two-dimensional square potential well for a p-wave superconductor. New bound states develop from the continuum in the superconducting gap as the strength of the impurity scattering increases. The resonance energy shows a pattern of oscillation as a function of the depth or the width of the potential well due to the quantum interference between the quasiparticle wave functions scattered from dierent parts of thWe study the effect of an extended impurity scattering on the bound state in an unconventional superconductor.
We compute the resonance energy of the bound state by varying the depth and the width of a two-dimensional square potential well for a p-wave superconductor. New bound states develop from the continuum in the superconducting gap as the strength of the impurity scattering increases. The resonance energy shows a pattern of oscillation as a function of the depth or the width of the potential well due to the quantum interference between the quasiparticle wave functions scattered from dierent parts of the extended potential.
We also compare the results with those for a model potential composed of four point-like potentialse extended potential.
We also compare the results with those for a model potential composed of four point-like potentials

다국어 초록 (Multilingual Abstract)

We study the effect of an extended impurity scattering on the bound state in an unconventional superconductor.
We compute the resonance energy of the bound state by varying the depth and the width of a two-dimensional square potential well for a p-wave superconductor. New bound states develop from the continuum in the superconducting gap as the strength of the impurity scattering increases. The resonance energy shows a pattern of oscillation as a function of the depth or the width of the potential well due to the quantum interference between the quasiparticle wave functions scattered from dierent parts of the extended potential.
We also compare the results with those for a model potential composed of four point-like potentials

참고문헌 (Reference)

1 "Introduction to the Quantum Theory" McGraw-Hill 1992

2 "Handbook of Mathematical Functions edited by M.Abramowitz and A. Stegun" 1963

3 "Green's Functions in Quantum Physics" Springer-Verlag 1983