Quasiparticle interference and the interplay between superconductivity and density wave order in the cuprates

Abstract

Scanning tunneling spectroscopy (STS) is a useful probe for studying the cuprates in the superconducting and pseudogap states. Here we present a theoretical study of the Z-map, defined as the ratio of the local density of states at positive and negative bias energies, which frequently is used to analyze STS data. We show how the evolution of the quasiparticle interference peaks in the Fourier transform Z-map can be understood by considering different types of impurity scatterers, as well as particle-hole asymmetry in the underlying bandstructure. We also explore the effects of density wave orders, and show that the Fourier transform Z-map may be used to both detect and distinguish between them.

final version published in Phys. Rev. B

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Cited by in corpus (7)

• Interpretation of scanning tunneling quasiparticle interference and impurity states in cuprates
• Friedel Oscillations as a Probe of Fermionic Quasiparticles
• Exploring Quasiparticles in High-Tc Cuprates Through Photoemission, Tunneling, and X-ray Scattering Experiments
• Friedel oscillation in non-Fermi liquid: Lesson from exactly solvable Hatsugai-Kohmoto model
• Quasiparticle scattering interference in cuprate superconductors
• Minimal model of charge and pairing density waves in X-ray scattering experiments
• The k-space Origins of Scattering in Bi2Sr2CaCu2O8+x