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

Physica C Superconductivity

Anharmonic phonons and strong electronic correlations in high-TC superconductors: A Quantum Monte Carlo study

M. Frick, I. Morgenstern, Wolfgang von der Linden

Published Dec 1, 1991• 3 citations
Publisher
DOI
10.1016/0921-4534(91)90888-6

Related papers

Quantum monte carlo simulations for high-Tc superconductors

A. Muramatsu, G. Dopf, J. Wagner +2 more

Advances in Solid State Physics•Sep 11, 2007•1 citation

A possible mechanism for high-Tc superconductor: A bound state of strongly correlated pair electrons

Ichiro Takahashi

Physica B+C•Mar 1, 1988•5 citations

Local anharmonic vibrations strong correlations and superconductivity: A quantum simulation study

M. Frick, Wolfgang von der Linden, I. Morgenstern +1 more

Zeitschrift für Physik B Condensed Matter•Oct 1, 1990•32 citations

Strong correlations and electron-phonon coupling in high-temperature superconductors: a quantum Monte Carlo study

I. Morgenstern, M. Frik, Wolfgang von der Linden

We present quantum simulation studies for a system of strongly correlated fermions coupled to local anharmonic phonons. The Monte Carlo calculations are based on a generalized version of the Projector Quantum Monte Carlo Method allowing a simultaneous treatment of fermions and dynamical phonons. The numerical simulations yield exact results in the electron-phonon parameter regime relevant for high-Tc superconductivity, which is not accessible by perturbative methods like Eliashberg-Theory. The class of electron-phonon-models covered in the simulations describes superconductivity exhibiting several features of the new high-Tc materials.

Journal de Physique I•Apr 1, 1992•5 citations

OFF-DIAGONAL LONG RANGE ORDER IN AN ELECTRON-PHONON MODEL FOR HIGH- T c SUPERCONDUCTORS

M. Frick, I. Morgenstern, Wolfgang von der Linden

We study a model for high- T c superconductors describing both the strong electronic correlations and a coupling of the carriers to anharmonic phonons. The Projector Quantum Monte Carlo Scheme has been employed to investigate ground state properties. We analyze the superconducting properties of the model by directly addressing to the existence of Off-Diagonal Long Range Order (ODLRO). We review the numerical algorithm and discuss the possibility to observe ODLRO. In the presented model, we find ODLRO pointing towards superconductivity instead of the presence of strong electronic correlations. We discuss several features of the superconducting condensate.

International Journal of Modern Physics C•Feb 1, 1992•4 citations

Correlation effects in the electronic structure of high Tc superconductors

Eduardo R. Gagliano, Alberto G. Rojo, C. A. Balseiro +1 more

Solid State Communications•Nov 1, 1987•28 citations
We present quantum simulation studies for a system of strongly correlated fermions coupled to local anharmonic phonons. The Monte Carlo calculations are based on a generalized version of the Projector Quantum Monte Carlo Method allowing a simultaneous treatment of fermions and dynamical phonons. The numerical simulations yield exact results in the electron-phonon parameter regime relevant for high-Tc superconductivity, which is not accessible by perturbative methods like Eliashberg-Theory. The class of electron-phonon-models covered in the simulations describes superconductivity exhibiting several features of the new high-Tc materials.
We study a model for high- T c superconductors describing both the strong electronic correlations and a coupling of the carriers to anharmonic phonons. The Projector Quantum Monte Carlo Scheme has been employed to investigate ground state properties. We analyze the superconducting properties of the model by directly addressing to the existence of Off-Diagonal Long Range Order (ODLRO). We review the numerical algorithm and discuss the possibility to observe ODLRO. In the presented model, we find ODLRO pointing towards superconductivity instead of the presence of strong electronic correlations. We discuss several features of the superconducting condensate.