Two-electron correlated motion due to Coulomb repulsion
Condensed Matter
2007-05-23 v1 Chaotic Dynamics
Quantum Physics
Abstract
A Hubbard-type model is derived from the microscopic Schr\"odinger equation. We found that additional terms describing direct two-electron transitions must be added to the standard Hubbard Hamiltonian. Such a Hamiltonian generates two-electron pairing due to on-site Coulomb repulsion. We demonstrate that the electron pairs with opposite spin propagate across periodic structures via direct and sequential two-electron tunneling. This mechanism can be used for a generation of entangled electron current. Numerical calculations show stability of the electron pairs.
Cite
@article{arxiv.cond-mat/0203545,
title = {Two-electron correlated motion due to Coulomb repulsion},
author = {S. A. Gurvitz},
journal= {arXiv preprint arXiv:cond-mat/0203545},
year = {2007}
}
Comments
4 pages