Pairfield Fluctuations of the 2D Hubbard Model

2018/10/23 by Maier, Thomas A., Scalapino, Douglas J. · 3 citations
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con)

paper · doi:10.48550/arxiv.1810.10043

Abstract

At temperatures above the superconducting transition temperature the pairfield susceptibility provides information on the nature of the pairfield fluctuations. Here we study the d-wave pairfield susceptibility of a 2D Hubbard model for dopings which have a pseudogap (PG) and for dopings which do not. One knows that in both cases there will be a region of Kosterlitz-Thouless fluctuations as the transition at T_KT is approached. Above this region we find evidence for Emery-Kivelson phase fluctuations for dopings with a PG and Gaussian amplitude fluctuations for dopings without a PG.

Cited by

• Superconductivity in imbalanced bilayer Hubbard model: enhanced d-wave and weakened s^±-wave pairing
• Suppression of the charge fluctuations by nonlocal correlations close to the Mott transition
• Enhanced superconductivity via layer differentiation in trilayer Hubbard model

Related

• Pseudogap and Amplitude Fluctuations in High Temperature Superconductors
• Interplay between magnetic and superconducting fluctuations in the doped 2d Hubbard model
• Evidence for a Pseudogap Above the Critical Temperature in the Attractive Hubbard Model
• The Attractive Hubbard Model in 2D: Is it capable of describing a pseudogap and preformed pairs?
• Numerical Studies of the 2D Hubbard Model