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Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime. / Otteneder, M.; Kvon, Z. D.; Tkachenko, O. A. и др.

в: Physical Review Applied, Том 10, № 1, 014015, 17.07.2018.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Otteneder, M, Kvon, ZD, Tkachenko, OA, Tkachenko, VA, Jaroshevich, AS, Rodyakina, EE, Latyshev, AV & Ganichev, SD 2018, 'Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime', Physical Review Applied, Том. 10, № 1, 014015. https://doi.org/10.1103/PhysRevApplied.10.014015

APA

Otteneder, M., Kvon, Z. D., Tkachenko, O. A., Tkachenko, V. A., Jaroshevich, A. S., Rodyakina, E. E., Latyshev, A. V., & Ganichev, S. D. (2018). Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime. Physical Review Applied, 10(1), [014015]. https://doi.org/10.1103/PhysRevApplied.10.014015

Vancouver

Otteneder M, Kvon ZD, Tkachenko OA, Tkachenko VA, Jaroshevich AS, Rodyakina EE и др. Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime. Physical Review Applied. 2018 июль 17;10(1):014015. doi: 10.1103/PhysRevApplied.10.014015

Author

Otteneder, M. ; Kvon, Z. D. ; Tkachenko, O. A. и др. / Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime. в: Physical Review Applied. 2018 ; Том 10, № 1.

BibTeX

@article{cdf06517ab1448218aa888ff372b454d,
title = "Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime",
abstract = "We report on the observation of the giant photoconductance of a quantum point contact (QPC) in the tunneling regime excited by terahertz radiation. Studied QPCs are formed in a GaAs/(Al,Ga)As heterostructure with a high-electron-mobility two-dimensional electron gas. We demonstrate that irradiation of strongly negatively biased QPCs by laser radiation with frequency f=0.69THz and intensity 50mW/cm2 results in two orders of magnitude enhancement of the QPC conductance. The effect increases with the dark conductivity decrease. It is also characterized by a strong polarization dependence and a drastic reduction of the signal by increasing the radiation frequency to 1.63 THz. We demonstrate that all experimental findings can be well explained by the photon-assisted tunneling through the QPC. Corresponding calculations are in good agreement with the experiment.",
keywords = "2-DIMENSIONAL ELECTRON-GAS, FAR-INFRARED RADIATION, MICROWAVE-RADIATION, DEEP IMPURITIES, FIELDS, WELLS, IONIZATION, ABSORPTION, TRANSPORT, TIME",
author = "M. Otteneder and Kvon, {Z. D.} and Tkachenko, {O. A.} and Tkachenko, {V. A.} and Jaroshevich, {A. S.} and Rodyakina, {E. E.} and Latyshev, {A. V.} and Ganichev, {S. D.}",
note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = jul,
day = "17",
doi = "10.1103/PhysRevApplied.10.014015",
language = "English",
volume = "10",
journal = "Physical Review Applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "1",

}

RIS

TY - JOUR

T1 - Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime

AU - Otteneder, M.

AU - Kvon, Z. D.

AU - Tkachenko, O. A.

AU - Tkachenko, V. A.

AU - Jaroshevich, A. S.

AU - Rodyakina, E. E.

AU - Latyshev, A. V.

AU - Ganichev, S. D.

N1 - Publisher Copyright: © 2018 American Physical Society.

PY - 2018/7/17

Y1 - 2018/7/17

N2 - We report on the observation of the giant photoconductance of a quantum point contact (QPC) in the tunneling regime excited by terahertz radiation. Studied QPCs are formed in a GaAs/(Al,Ga)As heterostructure with a high-electron-mobility two-dimensional electron gas. We demonstrate that irradiation of strongly negatively biased QPCs by laser radiation with frequency f=0.69THz and intensity 50mW/cm2 results in two orders of magnitude enhancement of the QPC conductance. The effect increases with the dark conductivity decrease. It is also characterized by a strong polarization dependence and a drastic reduction of the signal by increasing the radiation frequency to 1.63 THz. We demonstrate that all experimental findings can be well explained by the photon-assisted tunneling through the QPC. Corresponding calculations are in good agreement with the experiment.

AB - We report on the observation of the giant photoconductance of a quantum point contact (QPC) in the tunneling regime excited by terahertz radiation. Studied QPCs are formed in a GaAs/(Al,Ga)As heterostructure with a high-electron-mobility two-dimensional electron gas. We demonstrate that irradiation of strongly negatively biased QPCs by laser radiation with frequency f=0.69THz and intensity 50mW/cm2 results in two orders of magnitude enhancement of the QPC conductance. The effect increases with the dark conductivity decrease. It is also characterized by a strong polarization dependence and a drastic reduction of the signal by increasing the radiation frequency to 1.63 THz. We demonstrate that all experimental findings can be well explained by the photon-assisted tunneling through the QPC. Corresponding calculations are in good agreement with the experiment.

KW - 2-DIMENSIONAL ELECTRON-GAS

KW - FAR-INFRARED RADIATION

KW - MICROWAVE-RADIATION

KW - DEEP IMPURITIES

KW - FIELDS

KW - WELLS

KW - IONIZATION

KW - ABSORPTION

KW - TRANSPORT

KW - TIME

UR - http://www.scopus.com/inward/record.url?scp=85050378298&partnerID=8YFLogxK

U2 - 10.1103/PhysRevApplied.10.014015

DO - 10.1103/PhysRevApplied.10.014015

M3 - Article

AN - SCOPUS:85050378298

VL - 10

JO - Physical Review Applied

JF - Physical Review Applied

SN - 2331-7019

IS - 1

M1 - 014015

ER -

ID: 15964617