Pair formation in two-electron correlated chains
- 7 May 2003
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 15 (19), 3213-3216
- https://doi.org/10.1088/0953-8984/15/19/321
Abstract
We study two correlated electrons in a nearest neighbour tight- binding chain, with both on site and nearest neighbour interaction. Both the cases of parallel and antiparallel spins are considered. In addition to the free electron band for two electrons, there are correlated bands with positive or negative energy, depending on wheather the interaction parameters are repulsive or attractive. Electrons form bound states, with amplitudes that decay exponentially with separation. Conditions for such states to be filled at low temperatures are discussed.This publication has 19 references indexed in Scilit:
- Disorder-induced enhancement of the persistent current for strongly interacting electrons in one-dimensional ringsEurophysics Letters, 2002
- New Quantum Phase between the Fermi Glass and the Wigner Crystal in Two DimensionsPhysical Review Letters, 1999
- Two interacting electrons in a quasiperiodic chainPhysical Review B, 1997
- Localization of two interacting particles in a one-dimensional random potentialPhysical Review B, 1997
- Two Interacting Quasiparticles Above the Fermi SeaPhysical Review Letters, 1997
- No Enhancement of the Localization Length for Two Interacting Particles in a Random PotentialPhysical Review Letters, 1997
- Level Statistics and Localization for Two Interacting Particles in a Random PotentialPhysical Review Letters, 1996
- Oscillations for Correlated Electron Pairs in Disordered Mesoscopic RingsPhysical Review Letters, 1995
- Coherent Propagation of Two Interacting Particles in a Random PotentialEurophysics Letters, 1995
- Coherent Propagation of Two Interacting Particles in a Random PotentialPhysical Review Letters, 1994