Pair binding and enhancement of pairing correlations in asymmetric Hubbard ladders
Strongly Correlated Electrons
2023-03-29 v2
Abstract
Asymmetric two-leg Hubbard ladders with different on-site interactions and hoppings on each leg are investigated using the density matrix renormalization group method and exact diagonalizations. The pairing found in symmetric ladders is robust against the introduction of the leg asymmetry. When studying pairing, one-band Hubbard ladder models are better described as one-dimensional correlated two-band models than as sublattices of higher dimensional systems. The asymmetric Hubbard ladder provides us with a simple model for studying pairing in the crossover regime between charge transfer and Mott insulators.
Keywords
Cite
@article{arxiv.2209.05192,
title = {Pair binding and enhancement of pairing correlations in asymmetric Hubbard ladders},
author = {Anas Abdelwahab and Gökmen Polat and Eric Jeckelmann},
journal= {arXiv preprint arXiv:2209.05192},
year = {2023}
}