Year: 1996
Type: article
Abstract: We study the ground state of a clean two-dimensional electron liquid in a weak magnetic field where $N\ensuremath{\gg}1$ lower Landau levels are completely filled and the upper level is partially filled. It is shown that the electrons at the upper Landau level form domains with filling factors equal to 1 and zero. The domains alternate with a spatial period of order of the cyclotron radius, which is much larger than the interparticle distance at the upper Landau level. The one-particle density of states, which can be probed by tunneling experiments, is shown to have a gap linearly dependent on the magnetic field in the limit of large $N$.
Source: Physical Review Letters
Authors: A. A. Koulakov, M. M. Fogler, B. I. Shklovskii
Institution: University of Minnesota
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2038356556