Pairfield fluctuations of a 2D Hubbard model

Maier, Thomas A.; Scalapino, Douglas J.

doi:10.1038/s41535-019-0169-9

Title: Pairfield fluctuations of a 2D Hubbard model

Journal Article · 13 June 2019 · npj Quantum Materials

DOI: https://doi.org/10.1038/s41535-019-0169-9 · OSTI ID:1619715

; Scalapino, Douglas J.

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 a doping which has a pseudogap (PG) and for a doping which does not. 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 pairfield-order parameter-phase fluctuations for dopings with a PG and BCS Cooper pair fluctuations for dopings without a PG.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1619715

Alternate ID(s):: OSTI ID: 1542233

Journal Information:: npj Quantum Materials, Journal Name: npj Quantum Materials Vol. 4 Journal Issue: 1; ISSN 2397-4648

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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Cited by: 12 works

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