Tunneling into a Fractional Quantum Hall System and the Infrared Catastrophe
Mesoscale and Nanoscale Physics
2009-11-13 v1 Strongly Correlated Electrons
Abstract
We calculate the tunneling density of states of a two-dimensional interacting electron gas in a quantizing magnetic field. We show that the observed pseudogap in the density of states can be understood as the result of an infrared catastrophe in a noninteracting electron model. This catastrophe stems from the response of an electronic system to the potential produced by the abruptly added charge during a tunneling event. Our formalism can be applied at any filling factor without the use of Chern-Simons or composite fermion theory.
Keywords
Cite
@article{arxiv.cond-mat/0702238,
title = {Tunneling into a Fractional Quantum Hall System and the Infrared Catastrophe},
author = {Kelly R. Patton and Michael R. Geller},
journal= {arXiv preprint arXiv:cond-mat/0702238},
year = {2009}
}