Unveiling the plasma wave in the channel of graphene field-effect transistor

A. Soltani; F. Kuschewski; M. Bonmann; A. Generalov; A. Vorobiev; F. Ludwig; M. Wiecha; D. Cibiraite; F. Walla; S. C. Kehr; L. M. Eng; J. Stake; H. G. Roskos

doi:10.1109/IRMMW-THz.2019.8873874

Unveiling the plasma wave in the channel of graphene field-effect transistor

A. Soltani^*, F. Kuschewski, M. Bonmann, A. Generalov, A. Vorobiev, F. Ludwig, M. Wiecha, D. Cibiraite, F. Walla, S. C. Kehr, L. M. Eng, J. Stake, H. G. Roskos

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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Abstract

Coupling an electromagnetic wave at GHz to THz frequencies into the channel of a graphene field-effect transistor (GFET) provokes collective charge carrier oscillations of the two-dimensional electron gas (2DEG) known as plasma waves. Here, we report the very first experimental and direct mapping of the electric field distribution in a gated GFET at nanometer length scales using scattering-type scanning near-field microscopy (s-SNOM) at 2 THz. Based on the experimental results we deduce the plasma wave velocity for different gate bias voltages, which is in good agreement with the theoretical prediction.

Original language	English
Title of host publication	IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
Publisher	IEEE
ISBN (Electronic)	9781538682852
DOIs	https://doi.org/10.1109/IRMMW-THz.2019.8873874
Publication status	Published - 1 Sept 2019
MoE publication type	A4 Conference publication
Event	International Conference on Infrared, Millimeter, and Terahertz Waves - Paris, France Duration: 1 Sept 2019 → 6 Sept 2019 Conference number: 44

Publication series

Name	International Conference on Infrared, Millimeter, and Terahertz Waves
ISSN (Print)	2162-2027
ISSN (Electronic)	2162-2035

Conference

Conference	International Conference on Infrared, Millimeter, and Terahertz Waves
Abbreviated title	IRMMW-THz
Country/Territory	France
City	Paris
Period	01/09/2019 → 06/09/2019

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10.1109/IRMMW-THz.2019.8873874

ELEC_Soltani_Unveiling_the_plasmaAccepted author manuscript, 174 KB

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Soltani, A., Kuschewski, F., Bonmann, M., Generalov, A., Vorobiev, A., Ludwig, F., Wiecha, M., Cibiraite, D., Walla, F., Kehr, S. C., Eng, L. M., Stake, J., & Roskos, H. G. (2019). Unveiling the plasma wave in the channel of graphene field-effect transistor. In IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves Article 8873874 (International Conference on Infrared, Millimeter, and Terahertz Waves). IEEE. https://doi.org/10.1109/IRMMW-THz.2019.8873874

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title = "Unveiling the plasma wave in the channel of graphene field-effect transistor",

abstract = "Coupling an electromagnetic wave at GHz to THz frequencies into the channel of a graphene field-effect transistor (GFET) provokes collective charge carrier oscillations of the two-dimensional electron gas (2DEG) known as plasma waves. Here, we report the very first experimental and direct mapping of the electric field distribution in a gated GFET at nanometer length scales using scattering-type scanning near-field microscopy (s-SNOM) at 2 THz. Based on the experimental results we deduce the plasma wave velocity for different gate bias voltages, which is in good agreement with the theoretical prediction.",

author = "A. Soltani and F. Kuschewski and M. Bonmann and A. Generalov and A. Vorobiev and F. Ludwig and M. Wiecha and D. Cibiraite and F. Walla and Kehr, {S. C.} and Eng, {L. M.} and J. Stake and Roskos, {H. G.}",

year = "2019",

month = sep,

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doi = "10.1109/IRMMW-THz.2019.8873874",

language = "English",

series = "International Conference on Infrared, Millimeter, and Terahertz Waves",

publisher = "IEEE",

booktitle = "IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves",

address = "United States",

note = "International Conference on Infrared, Millimeter, and Terahertz Waves , IRMMW-THz ; Conference date: 01-09-2019 Through 06-09-2019",

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Soltani, A, Kuschewski, F, Bonmann, M, Generalov, A, Vorobiev, A, Ludwig, F, Wiecha, M, Cibiraite, D, Walla, F, Kehr, SC, Eng, LM, Stake, J & Roskos, HG 2019, Unveiling the plasma wave in the channel of graphene field-effect transistor. in IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves., 8873874, International Conference on Infrared, Millimeter, and Terahertz Waves, IEEE, International Conference on Infrared, Millimeter, and Terahertz Waves , Paris, France, 01/09/2019. https://doi.org/10.1109/IRMMW-THz.2019.8873874

Unveiling the plasma wave in the channel of graphene field-effect transistor. / Soltani, A.; Kuschewski, F.; Bonmann, M. et al.
IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves. IEEE, 2019. 8873874 (International Conference on Infrared, Millimeter, and Terahertz Waves).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Unveiling the plasma wave in the channel of graphene field-effect transistor

AU - Soltani, A.

AU - Kuschewski, F.

AU - Bonmann, M.

AU - Generalov, A.

AU - Vorobiev, A.

AU - Ludwig, F.

AU - Wiecha, M.

AU - Cibiraite, D.

AU - Walla, F.

AU - Kehr, S. C.

AU - Eng, L. M.

AU - Stake, J.

AU - Roskos, H. G.

N1 - Conference code: 44

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Coupling an electromagnetic wave at GHz to THz frequencies into the channel of a graphene field-effect transistor (GFET) provokes collective charge carrier oscillations of the two-dimensional electron gas (2DEG) known as plasma waves. Here, we report the very first experimental and direct mapping of the electric field distribution in a gated GFET at nanometer length scales using scattering-type scanning near-field microscopy (s-SNOM) at 2 THz. Based on the experimental results we deduce the plasma wave velocity for different gate bias voltages, which is in good agreement with the theoretical prediction.

AB - Coupling an electromagnetic wave at GHz to THz frequencies into the channel of a graphene field-effect transistor (GFET) provokes collective charge carrier oscillations of the two-dimensional electron gas (2DEG) known as plasma waves. Here, we report the very first experimental and direct mapping of the electric field distribution in a gated GFET at nanometer length scales using scattering-type scanning near-field microscopy (s-SNOM) at 2 THz. Based on the experimental results we deduce the plasma wave velocity for different gate bias voltages, which is in good agreement with the theoretical prediction.

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M3 - Conference article in proceedings

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T3 - International Conference on Infrared, Millimeter, and Terahertz Waves

BT - IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves

PB - IEEE

T2 - International Conference on Infrared, Millimeter, and Terahertz Waves

Y2 - 1 September 2019 through 6 September 2019

ER -

Soltani A, Kuschewski F, Bonmann M, Generalov A, Vorobiev A, Ludwig F et al. Unveiling the plasma wave in the channel of graphene field-effect transistor. In IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves. IEEE. 2019. 8873874. (International Conference on Infrared, Millimeter, and Terahertz Waves). doi: 10.1109/IRMMW-THz.2019.8873874

Unveiling the plasma wave in the channel of graphene field-effect transistor

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