Local modulations of the spin-fluctuation mediated pairing interaction by impurities in d-wave superconductors

TY - JOUR

T1 - Local modulations of the spin-fluctuation mediated pairing interaction by impurities in d-wave superconductors

AU - Rømer, Astrid Tranum

AU - Graser, S.

AU - Nunner, T. S.

AU - Hirschfeld, P. J.

AU - Andersen, Brian Møller

PY - 2012/8/9

Y1 - 2012/8/9

N2 - We present a self-consistent real space formulation of spin-fluctuation mediated d-wave pairing. By calculating all relevant inhomogeneous spin and charge susceptibilities in real space within the random phase approximation (RPA), we obtain the effective pairing interaction and study its spatial dependence near both local potential and hopping impurities. A remarkably large enhancement of the pairing interaction may be obtained near the impurity site. We discuss the relevance of our result to inhomogeneities observed by scanning tunneling spectroscopy on the surface of cuprate superconductors.

AB - We present a self-consistent real space formulation of spin-fluctuation mediated d-wave pairing. By calculating all relevant inhomogeneous spin and charge susceptibilities in real space within the random phase approximation (RPA), we obtain the effective pairing interaction and study its spatial dependence near both local potential and hopping impurities. A remarkably large enhancement of the pairing interaction may be obtained near the impurity site. We discuss the relevance of our result to inhomogeneities observed by scanning tunneling spectroscopy on the surface of cuprate superconductors.

U2 - 10.1103/PhysRevB.86.054507

DO - 10.1103/PhysRevB.86.054507

M3 - Journal article

SN - 2469-9950

VL - 86

SP - 054507

JO - Physical Review B

JF - Physical Review B

IS - 5

ER -