Quasiparticle resonant states as a probe of short-range electronic structure and Andreév coherence

Abstract

The recently observed properties of quasiparticle resonant states near impurities on the surface of superconducting BSCCO demonstrate that in-plane Andreev processes are either absent or phase-incoherent. Analysis of the spectral and spatial details of the electronic structure near a Zn impurity also suggest an effective magnetic component of the impurity potential. Further experiments are proposed to clarify whether the effective moments of nearby impurities are correlated.

10 pages, 4 figures

References in corpus (3)

• Imaging the Effects of Individual Zinc Impurity Atoms on Superconductivity in Bi2Sr2CaCu2O8+delta
• Impurity-Induced Bound Excitations on the Surface of Bi2Sr2CaCu2O8
• The local spectrum of a superconductor as a probe of interactions between magnetic impurities

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• Colloquium: Atomic spin chains on surfaces
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• States of Local Moment Induced by Nonmagnetic Impurities in Cuprate Superconductors
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• Impurity induced low-energy resonances in Bi_2Sr_2CaCu_2O_{8+delta}
• Suppression of Superfluid Density and the Pseudogap State in the Cuprates by Impurities
• Calculations of in-gap states of ferromagnetic spin chains on \textit{s}-wave wide-band superconductors