Thermal collapse of the fractional-quantum-hall-effect energy gaps

verfasst von

I. V. Kukushkin, N. J. Pulsford, K. Von Klitzing, R. J. Haug, K. Ploog, H. Buhmann, M. Potemski, G. Martinez, V. B. Timofeev

Abstract

The relationship between the mean energy of a two-dimensional electron gas and the first moment of their radiative recombination is investigated in the regimes of the integer and fractional quantum Hall effects. It is shown that the magnetic-field dependence of the first moment provides a method to measure the cyclotron, enhanced spin and quasi-particle energy gaps at the same time. This allows for a comparative analysis of the temperature dependence of these gaps. Upon increasing temperature an abrupt thermal collapse is observed for those energy gaps which are associated with electron-electron interactions.

Externe Organisation(en)

Max-Planck-Institut für Festkörperforschung
Université Grenoble Alpes (UGA)
RAS - Institute of Solid State Physics

Typ

Artikel

Journal

epl

Band

22

Seiten

287-294

Anzahl der Seiten

8

ISSN

0295-5075

Publikationsdatum

01.05.1993

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Physik und Astronomie (insg.)

Elektronische Version(en)

https://doi.org/10.1209/0295-5075/22/4/008 (Zugang: Unbekannt)