Direct observation of magnetophonon resonances in Landau-level lifetimes of a semiconductor heterostructure

T. A. Vaughan; R. J. Nicholas; C. J G M Langerak; B. N. Murdin; C. R. Pidgeon; N. J. Mason; P. J. Walker

Direct observation of magnetophonon resonances in Landau-level lifetimes of a semiconductor heterostructure

T. A. Vaughan, R. J. Nicholas, C. J G M Langerak, B. N. Murdin, C. R. Pidgeon, N. J. Mason, P. J. Walker

School of Engineering & Physical Sciences

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

66 Citations (Scopus)

Abstract

Landau-level lifetimes are determined from saturation cyclotron resonance measurements on an InAs/GaSb double heterojunction using a picosecond far-infrared free-electron laser. Strong nonparabolicity of the conduction band truncates the equidistant Landau-level ladder, and saturation is achieved at all wavelengths. The Landau-level lifetimes show minima at N(Latin small letter h with stroke sign)?_c=(Latin small letter h with stroke sign)?_LO, a direct observation of the magnetophonon effect. Observed picosecond lifetimes are due to LO-phonon emission which dominates electron-electron scattering at the magnetophonon resonance condition.

Original language	English
Pages (from-to)	16481-16484
Number of pages	4
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	53
Issue number	24
Publication status	Published - 15 Jun 1996

Cite this

@article{bfec7960960f4a16ba9a6e2cec22f321,

title = "Direct observation of magnetophonon resonances in Landau-level lifetimes of a semiconductor heterostructure",

abstract = "Landau-level lifetimes are determined from saturation cyclotron resonance measurements on an InAs/GaSb double heterojunction using a picosecond far-infrared free-electron laser. Strong nonparabolicity of the conduction band truncates the equidistant Landau-level ladder, and saturation is achieved at all wavelengths. The Landau-level lifetimes show minima at N(Latin small letter h with stroke sign)?c=(Latin small letter h with stroke sign)?LO, a direct observation of the magnetophonon effect. Observed picosecond lifetimes are due to LO-phonon emission which dominates electron-electron scattering at the magnetophonon resonance condition.",

author = "Vaughan, {T. A.} and Nicholas, {R. J.} and Langerak, {C. J G M} and Murdin, {B. N.} and Pidgeon, {C. R.} and Mason, {N. J.} and Walker, {P. J.}",

year = "1996",

month = jun,

day = "15",

language = "English",

volume = "53",

pages = "16481--16484",

journal = "Physical Review B: Condensed Matter and Materials Physics",

issn = "1550-235X",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Direct observation of magnetophonon resonances in Landau-level lifetimes of a semiconductor heterostructure

AU - Vaughan, T. A.

AU - Nicholas, R. J.

AU - Langerak, C. J G M

AU - Murdin, B. N.

AU - Pidgeon, C. R.

AU - Mason, N. J.

AU - Walker, P. J.

PY - 1996/6/15

Y1 - 1996/6/15

N2 - Landau-level lifetimes are determined from saturation cyclotron resonance measurements on an InAs/GaSb double heterojunction using a picosecond far-infrared free-electron laser. Strong nonparabolicity of the conduction band truncates the equidistant Landau-level ladder, and saturation is achieved at all wavelengths. The Landau-level lifetimes show minima at N(Latin small letter h with stroke sign)?c=(Latin small letter h with stroke sign)?LO, a direct observation of the magnetophonon effect. Observed picosecond lifetimes are due to LO-phonon emission which dominates electron-electron scattering at the magnetophonon resonance condition.

AB - Landau-level lifetimes are determined from saturation cyclotron resonance measurements on an InAs/GaSb double heterojunction using a picosecond far-infrared free-electron laser. Strong nonparabolicity of the conduction band truncates the equidistant Landau-level ladder, and saturation is achieved at all wavelengths. The Landau-level lifetimes show minima at N(Latin small letter h with stroke sign)?c=(Latin small letter h with stroke sign)?LO, a direct observation of the magnetophonon effect. Observed picosecond lifetimes are due to LO-phonon emission which dominates electron-electron scattering at the magnetophonon resonance condition.

M3 - Article

SN - 1550-235X

VL - 53

SP - 16481

EP - 16484

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

IS - 24

ER -

Direct observation of magnetophonon resonances in Landau-level lifetimes of a semiconductor heterostructure

Abstract

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