Theory of the quasiparticle interference patterns in the pseudogap phase of the cuprate superconductors

TL;DR

This paper proposes a method using Fourier transform scanning tunneling spectroscopy to differentiate the pseudogap phase in cuprates by analyzing quasiparticle interference patterns influenced by coherence factors.

Contribution

It introduces a novel approach to identify the nature of the pseudogap phase through quasiparticle interference analysis, distinguishing between different underlying mechanisms.

Findings

Interference patterns depend on quasiparticle coherence factors

Method can differentiate between superconducting fluctuations and particle-hole condensates

Provides a new experimental tool for pseudogap phase investigation

Abstract

A method is proposed to test for the nature of the pseudogap phase in cuprates using the recently developed technique of Fourier transform scanning tunneling spectroscopy. We show that the observed quasiparticle interference patterns depend critically on the quasiparticle coherence factors, making it possible to distinguish between the pseudogap dominated by superconducting fluctuations and by various particle-hole condensates.