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Quasiparticle interference induced by a momentum‐dependent scattering in an s‐wave superconducting state
Author(s) -
Pisarski P.,
Harań G.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200460052
Subject(s) - quasiparticle , superconductivity , momentum (technical analysis) , impurity , condensed matter physics , physics , interference (communication) , scattering , quantum mechanics , telecommunications , channel (broadcasting) , finance , economics , computer science
Fourier transformed maps of the local density of states in disordered superconducting Bi 2 Sr 2 CaCu 2 O 8+ δ provided important information on the quasiparticle states and their interference in high‐temperature superconductors. Neglecting the momentum‐dependence of the impurity potential it is possible to disentangle the quasiparticle interference effect from the static structure factor of the scatterers. The k‐dependence of the impurity potential makes such a distinction difficult. Here, for the model momentum‐dependent potential, we discuss the quasiparticle interference induced by an impurity in an s‐wave superconductor. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)