Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-05-15
Phys. Rev. B, 68 085313 (2003)
Physics
Condensed Matter
Strongly Correlated Electrons
11 pages, 16 figures Submitted to Phys. Rev. B
Scientific paper
10.1103/PhysRevB.68.085313
We develop a non-perturbative numerical method to study tunneling of a single electron through an Aharonov-Bohm ring where several strongly interacting electrons are bound. Inelastic processes and spin-flip scattering are taken into account. The method is applied to study microscopic mechanisms of dephasing in a non-trivial model. We show that electron-electron interactions described by the Hubbard Hamiltonian lead to strong dephasing: the transmission probability at flux $\Phi=\pi$ is high even at small interaction strength. In addition to inelastic scattering, we identify two energy conserving mechanisms of dephasing: symmetry-changing and spin-flip scattering. The many-electron state on the ring determines which of these mechanisms will be at play: transmitted current can occur either in elastic or inelastic channels, with or without changing the spin of the scattering electron.
Bonča Janez
Zitko Rok
No associations
LandOfFree
Microscopic mechanisms of dephasing due to electron-electron interactions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Microscopic mechanisms of dephasing due to electron-electron interactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microscopic mechanisms of dephasing due to electron-electron interactions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-520497