Particle-hole symmetric Luttinger liquids in a quantum Hall circuit
Mesoscale and Nanoscale Physics
2009-11-11 v1 Strongly Correlated Electrons
Abstract
We report current transmission data through a split-gate constriction fabricated onto a two-dimensional electron system in the integer quantum Hall (QH) regime. Split-gate biasing drives inter-edge backscattering and is shown to lead to suppressed or enhanced transmission, in marked contrast with the expected linear Fermi-liquid behavior. This evolution is described in terms of particle-hole symmetry and allows us to conclude that an unexpected class of gate-controlled particle-hole-symmetric chiral Luttinger Liquids (CLLs) can exist at the edges of our QH circuit. These results highlight the role of particle-hole symmetry on the properties of CLL edge states.
Cite
@article{arxiv.cond-mat/0501392,
title = {Particle-hole symmetric Luttinger liquids in a quantum Hall circuit},
author = {Stefano Roddaro and Vittorio Pellegrini and Fabio Beltram and Loren N. Pfeiffer and Ken W. West},
journal= {arXiv preprint arXiv:cond-mat/0501392},
year = {2009}
}
Comments
4 pages, 4 figures