Magnetorotons in quasi-three-dimensional electron systems

K. Karraï; X. Ying; H. D. Drew; M. Santos; M. Shayegan; S. R.E. Yang; A. H. MacDonald

doi:10.1103/PhysRevLett.67.3428

Magnetorotons in quasi-three-dimensional electron systems

K. Karraï, X. Ying, H. D. Drew, M. Santos, M. Shayegan, S. R.E. Yang, A. H. MacDonald

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	3428-3431
Number of pages	4
Journal	Physical review letters
Volume	67
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.67.3428
Publication status	Published - 1991
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.67.3428

Fingerprint Dive into the research topics of 'Magnetorotons in quasi-three-dimensional electron systems'. Together they form a unique fingerprint.

Cite this

@article{2f686619b2a74440b6d374b0e4c6249b,

title = "Magnetorotons in quasi-three-dimensional electron systems",

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.",

author = "K. Karra{\"i} and X. Ying and Drew, {H. D.} and M. Santos and M. Shayegan and Yang, {S. R.E.} and MacDonald, {A. H.}",

year = "1991",

doi = "10.1103/PhysRevLett.67.3428",

language = "English",

volume = "67",

pages = "3428--3431",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Magnetorotons in quasi-three-dimensional electron systems

AU - Karraï, K.

AU - Ying, X.

AU - Drew, H. D.

AU - Santos, M.

AU - Shayegan, M.

AU - Yang, S. R.E.

AU - MacDonald, A. H.

PY - 1991

Y1 - 1991

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0345337514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345337514&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.67.3428

DO - 10.1103/PhysRevLett.67.3428

M3 - Article

AN - SCOPUS:0345337514

VL - 67

SP - 3428

EP - 3431

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 24

ER -

Magnetorotons in quasi-three-dimensional electron systems

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this