Theory of pair density wave on a quasi-one-dimensional lattice in the Hubbard model

Abstract

In this study, we examine the superconducting instability of a quasi-one-dimensional lattice in the Hubbard model based on the random-phase approximation (RPA) and the fluctuation exchange (FLEX) approximation. We find that a spin-singlet pair density wave (PDW-singlet) with a center-of-mass momentum of $2k_F$ can be stabilized when the one-dimensionality becomes prominent toward the perfect nesting of the Fermi surface. The obtained pair is a mixture of even-frequency and odd-frequency singlet ones. The dominant even-frequency component does not have nodal lines on the Fermi surface. This PDW-singlet state is more favorable as compared to RPA when self-energy correction is introduced in the FLEX approximation.

10 pages, 14 figures

References in corpus (13)

• Striped superconductors: How the cuprates intertwine spin, charge and superconducting orders
• Theory of the proximity effect in junctions with unconventional superconductors
• Dislocations and vortices in pair density wave superconductors
• Symmetries of Pairing Correlations in Superconductor-Ferromagnet Nanostructures
• Odd-frequency pairing in normal metal/superconductor junctions
• Theory of the striped superconductor
• Coexistence of charge-density-wave and pair-density-wave orders in underdoped cuprates
• Odd-frequency superconducting states with different types of Meissner response: Problem of coexistence
• Spectral signatures of modulated d-wave superconducting phases
• Mean-field description of odd-frequency superconductivity with staggered ordering vector
• Quasi One Dimensional Pair Density Wave Superconducting State
• Dimensional Reduction and Odd-Frequency Pairing of the Checkerboard-Lattice Hubbard Model at 1/4-Filling
• Odd-frequency pair density wave correlations in underdoped cuprates

Cited by in corpus (4)

• Identification of a Nematic Pair Density Wave State in Bi2Sr2CaCu2O8+x
• Hidden, one-dimensional, strongly nested, and almost half-filled Fermi surface in Ba${}_2$CuO${}_{3+y}$ superconductors
• Quasiparticle interference as a direct experimental probe of bulk odd-frequency superconducting pairing
• Multiplicative topological semimetals