Higher Energy Composite Fermion Levels in the Fractional Quantum Hall Effect
Strongly Correlated Electrons
2011-08-22 v1
Abstract
Even though composite fermions in the fractional quantum Hall liquid are well established, it is not yet known up to what energies they remain intact. We probe the high-energy spectrum of the 1/3 liquid directly by resonant inelastic light scattering, and report the observation of a large number of new collective modes. Supported by our theoretical calculations, we associate these with transitions across two or more composite fermions levels. The formation of quasiparticle levels up to high energies is direct evidence for the robustness of topological order in the fractional quantum Hall effect.
Keywords
Cite
@article{arxiv.1108.3978,
title = {Higher Energy Composite Fermion Levels in the Fractional Quantum Hall Effect},
author = {Trevor D. Rhone and Dwipesh Majumder and Brian S. Dennis and Cyrus Hirjibehedin and Irene Dujovne and Javier G. Groshaus and Yann Gallais and Jainendra K. Jain and Sudhansu S. Mandal and Aron Pinczuk and Loren Pfeiffer and Ken West},
journal= {arXiv preprint arXiv:1108.3978},
year = {2011}
}
Comments
4 pages, 5 figures