Magnetorotons in quasi-three-dimensional electron systems

K. Karraï, X. Ying, H. D. Drew, M. Santos, M. Shayegan, Sung Ryul Yang, A. H. MacDonald

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The dispersion relation for magnetoplasmons propagating perpendicular to the magnetic field is investigated for a quasi-three-dimensional electron system. The magnetic field is in the plane of a ≅100-nm-wide electron slab which is confined by a wide AlxGa1-xAs parabolic quantum well. A minimum is found in the magnetoplasma dispersion relation, indicating the existence of a magnetoroton excitation for wave vector q about twice the inverse magnetic length. Calculations of the dispersion relation within the single-mode approximation are in good qualitative agreement with the measurements.

Original languageEnglish
Pages (from-to)3428-3431
Number of pages4
JournalPhysical Review Letters
Volume67
Issue number24
Publication statusPublished - 1991 Dec 9
Externally publishedYes

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electrons
magnetic fields
slabs
quantum wells
approximation
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Karraï, K., Ying, X., Drew, H. D., Santos, M., Shayegan, M., Yang, S. R., & MacDonald, A. H. (1991). Magnetorotons in quasi-three-dimensional electron systems. Physical Review Letters, 67(24), 3428-3431.

Magnetorotons in quasi-three-dimensional electron systems. / Karraï, K.; Ying, X.; Drew, H. D.; Santos, M.; Shayegan, M.; Yang, Sung Ryul; MacDonald, A. H.

In: Physical Review Letters, Vol. 67, No. 24, 09.12.1991, p. 3428-3431.

Research output: Contribution to journalArticle

Karraï, K, Ying, X, Drew, HD, Santos, M, Shayegan, M, Yang, SR & MacDonald, AH 1991, 'Magnetorotons in quasi-three-dimensional electron systems', Physical Review Letters, vol. 67, no. 24, pp. 3428-3431.
Karraï K, Ying X, Drew HD, Santos M, Shayegan M, Yang SR et al. Magnetorotons in quasi-three-dimensional electron systems. Physical Review Letters. 1991 Dec 9;67(24):3428-3431.
Karraï, K. ; Ying, X. ; Drew, H. D. ; Santos, M. ; Shayegan, M. ; Yang, Sung Ryul ; MacDonald, A. H. / Magnetorotons in quasi-three-dimensional electron systems. In: Physical Review Letters. 1991 ; Vol. 67, No. 24. pp. 3428-3431.
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