Lorentzian noise in the two-dimensional electron gas of AlxGa1–xAs/GaAs quantum wells

Yuping Chen; C.M. Vliet, van; P.M. Koenraad; G.L. Larkins Jr.

doi:10.1063/1.371732

Lorentzian noise in the two-dimensional electron gas of AlxGa1–xAs/GaAs quantum wells

Yuping Chen, C.M. Vliet, van, P.M. Koenraad, G.L. Larkins Jr.

Photonics and Semiconductor Nanophysics

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Abstract

Current noise spectra SI() are reported on samples grown by the molecular beam epitaxy technique, with current-carrying contacts, acting as source and drain, and two probes extending into the two-dimensional electron gas (2DEG) of the AlGaAs/GaAs quantum well, in the range 77–295 K for frequencies of 10 Hz to 1 MHz. The time constants are almost independent of temperature and the current dependence is close to linear. The noise is interpreted as Lorentzian-modulated shot noise of the 2DEG current.

Original language	English
Pages (from-to)	6206-6212
Journal	Journal of Applied Physics
Volume	86
Issue number	11
DOIs	https://doi.org/10.1063/1.371732
Publication status	Published - 1999

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title = "Lorentzian noise in the two-dimensional electron gas of AlxGa1–xAs/GaAs quantum wells",

abstract = "Current noise spectra SI() are reported on samples grown by the molecular beam epitaxy technique, with current-carrying contacts, acting as source and drain, and two probes extending into the two-dimensional electron gas (2DEG) of the AlGaAs/GaAs quantum well, in the range 77–295 K for frequencies of 10 Hz to 1 MHz. The time constants are almost independent of temperature and the current dependence is close to linear. The noise is interpreted as Lorentzian-modulated shot noise of the 2DEG current.",

author = "Yuping Chen and {Vliet, van}, C.M. and P.M. Koenraad and {Larkins Jr.}, G.L.",

year = "1999",

doi = "10.1063/1.371732",

language = "English",

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journal = "Journal of Applied Physics",

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AU - Chen, Yuping

AU - Vliet, van, C.M.

AU - Koenraad, P.M.

AU - Larkins Jr., G.L.

PY - 1999

Y1 - 1999

N2 - Current noise spectra SI() are reported on samples grown by the molecular beam epitaxy technique, with current-carrying contacts, acting as source and drain, and two probes extending into the two-dimensional electron gas (2DEG) of the AlGaAs/GaAs quantum well, in the range 77–295 K for frequencies of 10 Hz to 1 MHz. The time constants are almost independent of temperature and the current dependence is close to linear. The noise is interpreted as Lorentzian-modulated shot noise of the 2DEG current.

AB - Current noise spectra SI() are reported on samples grown by the molecular beam epitaxy technique, with current-carrying contacts, acting as source and drain, and two probes extending into the two-dimensional electron gas (2DEG) of the AlGaAs/GaAs quantum well, in the range 77–295 K for frequencies of 10 Hz to 1 MHz. The time constants are almost independent of temperature and the current dependence is close to linear. The noise is interpreted as Lorentzian-modulated shot noise of the 2DEG current.

U2 - 10.1063/1.371732

DO - 10.1063/1.371732

M3 - Article

SN - 0021-8979

VL - 86

SP - 6206

EP - 6212

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 11

ER -

Lorentzian noise in the two-dimensional electron gas of AlxGa1–xAs/GaAs quantum wells

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