Commensurability oscillations in the surface-acoustic-wave-induced acoustoelectric effect in a two-dimensional electron gas

Physics

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https://doi.org/10.1103/PhysRevB.71.241301
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Keywords

two-dimensional electron gas, surface acoustic waves, acoustoelectric effects, impurity scattering, cyclotron resonance

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Commensurability oscillations in the surface-acoustic-wave-induced acoustoelectric effect in a two-dimensional electron gas. / Robinson, John P.; Falko, Vladimir I.
In: Physical review B, Vol. 71, 06.2005, p. 241301.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{3459f011d45540d2a6dea04df3e0e6fb,

title = "Commensurability oscillations in the surface-acoustic-wave-induced acoustoelectric effect in a two-dimensional electron gas",

abstract = "We study the acoustoelectric effect generated by surface acoustic waves (SAW) in a high-mobility two-dimensional electron gas with isotropic and especially small-angle impurity scattering. In both cases the acoustoelectric effect exhibits Weiss oscillations periodic in B–1 due to the commensurability of the SAW period with the size of the cyclotron orbit and resonances at the SAW frequency =kc multiple of the cyclotron frequency. We describe how oscillations in the acoustoelectric effect are damped in low fields where c*1 (with the time scale * dependent on the type of scattering) and find its nonoscillatory part, which remains finite to the lowest fields.",

keywords = "two-dimensional electron gas, surface acoustic waves, acoustoelectric effects, impurity scattering, cyclotron resonance",

author = "Robinson, {John P.} and Falko, {Vladimir I.}",

year = "2005",

month = jun,

doi = "10.1103/PhysRevB.71.241301",

language = "English",

volume = "71",

pages = "241301",

journal = "Physical review B",

issn = "1550-235X",

publisher = "AMER PHYSICAL SOC",

}

RIS

TY - JOUR

T1 - Commensurability oscillations in the surface-acoustic-wave-induced acoustoelectric effect in a two-dimensional electron gas

AU - Robinson, John P.

AU - Falko, Vladimir I.

PY - 2005/6

Y1 - 2005/6

N2 - We study the acoustoelectric effect generated by surface acoustic waves (SAW) in a high-mobility two-dimensional electron gas with isotropic and especially small-angle impurity scattering. In both cases the acoustoelectric effect exhibits Weiss oscillations periodic in B–1 due to the commensurability of the SAW period with the size of the cyclotron orbit and resonances at the SAW frequency =kc multiple of the cyclotron frequency. We describe how oscillations in the acoustoelectric effect are damped in low fields where c*1 (with the time scale * dependent on the type of scattering) and find its nonoscillatory part, which remains finite to the lowest fields.

AB - We study the acoustoelectric effect generated by surface acoustic waves (SAW) in a high-mobility two-dimensional electron gas with isotropic and especially small-angle impurity scattering. In both cases the acoustoelectric effect exhibits Weiss oscillations periodic in B–1 due to the commensurability of the SAW period with the size of the cyclotron orbit and resonances at the SAW frequency =kc multiple of the cyclotron frequency. We describe how oscillations in the acoustoelectric effect are damped in low fields where c*1 (with the time scale * dependent on the type of scattering) and find its nonoscillatory part, which remains finite to the lowest fields.

KW - two-dimensional electron gas

KW - surface acoustic waves

KW - acoustoelectric effects

KW - impurity scattering

KW - cyclotron resonance

U2 - 10.1103/PhysRevB.71.241301

DO - 10.1103/PhysRevB.71.241301

M3 - Journal article

VL - 71

SP - 241301

JO - Physical review B

JF - Physical review B

SN - 1550-235X

ER -

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