Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Bulletin of the American Physical Society

Quantum Monte Carlo Studies on Attractive Hubbard Model with Anisotropic Spin-dependent Hopping on Two-leg Ladder Lattice

Ho Kin Tang, Zhongbing Huang, Jin Sun, Hai Lin

Published Feb 27, 2012• 0 citations
OpenAlex

Related papers

Effect of hopping anisotropy on the d-wave pairing in the Hubbard model: From two-leg ladder to square lattice

Shuhui Yang, Hengyu Liu, Weiqi Li +4 more

Physics Letters A•Jul 13, 2022•1 citation

Monte Carlo study of the pairing interaction in the two-leg Hubbard ladder

T. Dahm, Douglas J. Scalapino

Physica C Superconductivity•Aug 1, 1997•12 citations

Quantum-Monte-Carlo Studies of One- and Two-Dimensional Hubbard Models

R. Preuss, Fakher F. Assaad, A. Muramatsu +1 more

NATO ASI series. Series B : Physics•Jan 1, 1995•1 citation

Quantum Monte Carlo Study of an Extended Hubbard Model on a Two-Leg Ladder

Tomo Munehisa, Yasuko Munehisa

An extended Hubbard model on a two-leg ladder is numerically studied by means of the quantum Monte Carlo techniques. The model we study has the nearest-neighbor interactions which are repulsive along chains and attractive for rungs. The plots of the doping parameter versus the chemical potential show two cliff-like regions and a large plateau region. Results on the charge susceptibility suggest it diverges in these cliff-like regions. These observations might imply a signal to the phase separation, which should be related to the effective attractive interactions along chains.

arXiv:cond-mat/9705067•Journal of the Physical Society of Japan•Dec 15, 1997•4 citations

Pairing Correlation in the Three-Leg Hubbard Ladder – Renormalization Group and Quantum Monte Carlo Studies

T. Kimura, Kazuhiko Kuroki, Hideo Aoki

In order to shed light whether the `even-odd conjecture' (even numbers of legs will superconduct accompanied by a spin gap while odd ones do not) for correlated electrons in ladder systems, the pairing correlation is studied for the Hubbard model on a two- and three-leg ladders. We have employed both the weak-coupling renormalization group and the quantum Monte Carlo (QMC) method for strong interactions. For the two-leg Hubbard ladder, a systematic QMC (with a controlled level spacings) has detected an enhanced pairing correlation, which is consistent with the weak-coupling prediction. We also calculate the correlation functions in the three-leg Hubbard ladder and show that the weak-coupling study predicts the dominant superconductivity, which refutes the naive even-odd conjecture. A crucial point is a spin gap for only some of the multiple spin modes is enough to make the ladder superconduct with a pairing symmetry (d-like here) compatible with the gapped mode. A QMC study for the three-leg ladder endorses the enhanced pairing correlation.

arXiv:cond-mat/9706289•Journal of the Physical Society of Japan•Apr 15, 1998•16 citations

Quantum Monte Carlo simulation of the two-dimensional Hubbard modell

Joong-Bae Kim

•Jan 1, 2001•0 citations
An extended Hubbard model on a two-leg ladder is numerically studied by means of the quantum Monte Carlo techniques. The model we study has the nearest-neighbor interactions which are repulsive along chains and attractive for rungs. The plots of the doping parameter versus the chemical potential show two cliff-like regions and a large plateau region. Results on the charge susceptibility suggest it diverges in these cliff-like regions. These observations might imply a signal to the phase separation, which should be related to the effective attractive interactions along chains.
In order to shed light whether the `even-odd conjecture' (even numbers of legs will superconduct accompanied by a spin gap while odd ones do not) for correlated electrons in ladder systems, the pairing correlation is studied for the Hubbard model on a two- and three-leg ladders. We have employed both the weak-coupling renormalization group and the quantum Monte Carlo (QMC) method for strong interactions. For the two-leg Hubbard ladder, a systematic QMC (with a controlled level spacings) has detected an enhanced pairing correlation, which is consistent with the weak-coupling prediction. We also calculate the correlation functions in the three-leg Hubbard ladder and show that the weak-coupling study predicts the dominant superconductivity, which refutes the naive even-odd conjecture. A crucial point is a spin gap for only some of the multiple spin modes is enough to make the ladder superconduct with a pairing symmetry (d-like here) compatible with the gapped mode. A QMC study for the three-leg ladder endorses the enhanced pairing correlation.