Evolution of Pairing Orders between Pseudogap and Superconducting Phases of Cuprate Superconductors.

ABSTRACT: One of the most puzzling problems of high temperature cuprate superconductor is the pseudogap phase (PG) at temperatures above the superconducting transition temperature in the underdoped regime. The PG phase is found by the angle-resolved photoemission spectra (ARPES) to have a gap at some regions in momentum space and a fraction of Fermi surface remained, known as Fermi arcs. The arc turns into a d-wave SC gap with a node below the SC transition temperature. Here, by studying a strongly correlated model at low temperatures, we obtained a phase characterized by two kinds of pairing order parameters with the total momentum of the Cooper pair to be zero and finite. The finite momentum pairing is accompanied with a spatial modulation of pairing order, i.e. a pair density wave (PDW). These PD

SUBMITTER: Tu WL 

PROVIDER: S-EPMC6368576 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature