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

Abstract

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.

8 pages, 7 figures

References in corpus (19)

• Scanning tunneling spectroscopy of high-temperature superconductors
• An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates
• Visualizing pair formation on the atomic scale in the high-Tc superconductor Bi2Sr2CaCu2O8+d
• Electronic Origin of the Inhomogeneous Pairing Interaction in the High-Tc Superconductor Bi2Sr2CaCu2O8+d
• A Systematic Study of Electron-Phonon Coupling to Oxygen Modes Across the Cuprates
• Imaging the impact on cuprate superconductivity of varying the inter-atomic distances within individual crystal unit-cells
• Fourier transform spectroscopy of d-wave quasiparticles in the presence of atomic scale pairing disorder
• Disorder-Induced Static Antiferromagnetism in Cuprate Superconductors
• Enhanced Superconductivity in Superlattices of High-$T_c$ Cuprates
• Inhomogeneity-induced enhancement of the pairing interaction in cuprates
• Disorder-induced freezing of dynamical spin fluctuations in underdoped cuprates
• Thermodynamic transitions in inhomogeneous d-wave superconductors
• Breakdown of universal transport in correlated d-wave superconductors
• Tc suppression and resistivity in cuprates with out of plane defects
• Superconducting gap variations induced by structural supermodulation in BSCCO
• Effect of dopant atoms on local superexchange in cuprate superconductors: a perturbative treatment
• Modulation of pairing interaction in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ by an O dopant: a density functional theory study
• Extinction of impurity resonances in large-gap regions of inhomogeneous d-wave superconductors
• Signatures of modulated pair interaction in cuprate superconductors

Cited by in corpus (2)

• Modulations of the local pairing interaction near magnetic impurities in d-wave superconductors
• Phase diagram of the isovalent phosphorous-substituted 122-type iron pnictides