FIR magneto emission study of the Quantum Hall State and breakdown of the Quantum Hall Effect

A. Raymond*, C. Chaubet, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Using cyclotron emission, we have performed simultaneously optical (FIR) and transport measurements, on quasi 2 DEG in GaAs heterojunctions. In low electric field conditions, the FIR spectrum showed, beside the cyclotron resonance line, supplementary lines in coincidence with the minima of ρxx (Hall plateaus). These supplementary lines are analysed in terms of non-homogeneous distribution of potential in the Quantum Hall state. The breakdown of the QHE observed in strong heating conditions, is due to the breakdown of the equality Ns = i (eB/h).

Original languageEnglish (US)
Pages (from-to)275-281
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1362
Issue numberpt 1
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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