Energy gaps of the fractional quantum hall effect measured by magneto-optics

authored by

I. V. Kukushkin, N. J. Pulsford, K. von Klitzing, K. Ploog, R. J. Haug, S. Koch, V. B. Timofeev

Abstract

We have studied the magnetic-field dependence of the spectral position of the luminescence line due to radiative recombination of two-dimensional electrons in the extreme quantum limit. We verify the recent theoretical prediction that downward cusps occur in the spectral position of the line at fractional filling factors. From the strength of these cusps we derive values for the Fractional Quantum Hall Effect energy gaps and their dependence on the magnetic field.

External Organisation(s)

Max Planck Institute for Solid State Research (MPI-FKF)
RAS - Institute of Solid State Physics

Type

Article

Journal

Europhysics Letters (EPL)

Volume

18

Pages

63-68

No. of pages

6

ISSN

0295-5075

Publication date

02.1992

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

https://doi.org/10.1209/0295-5075/18/1/012 (Access: Unknown)