Wave-packet propagation in a graphene geometric diode

M. Andelkovic; Kh Yu Rakhimov; A. Chaves; G. R. Berdiyorov; M. V. Milošević

doi:10.1016/j.physe.2022.115607

Wave-packet propagation in a graphene geometric diode

M. Andelkovic, Kh Yu Rakhimov^*, A. Chaves, G. R. Berdiyorov, M. V. Milošević

^*Corresponding author for this work

QEERI - Energy Center

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

7 Citations (Scopus)

Abstract

Dynamics of electron wave-packets is studied using the continuum Dirac model in a graphene geometric diode where the propagation of the wave packet is favored in certain direction due to the presence of geometric constraints. Clear rectification is obtained in the THz frequency range with the maximum rectification level of 3.25, which is in good agreement with recent experiments on graphene ballistic diodes. The rectification levels are considerably higher for systems with narrower channels. In this case, the wave packet transmission probabilities and rectification rate also strongly depend on the energy of the incident wave packet, as a result of the quantum nature of energy levels along such channels. These findings can be useful for fundamental understanding of the charge carrier dynamics in graphene geometry diodes.

Original language	English
Article number	115607
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	147
DOIs	https://doi.org/10.1016/j.physe.2022.115607
Publication status	Published - Mar 2023

Keywords

Continuum Dirac model
Graphene
Graphene geometric diode
Transmission probabilities
Wave packet propagation

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10.1016/j.physe.2022.115607

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title = "Wave-packet propagation in a graphene geometric diode",

abstract = "Dynamics of electron wave-packets is studied using the continuum Dirac model in a graphene geometric diode where the propagation of the wave packet is favored in certain direction due to the presence of geometric constraints. Clear rectification is obtained in the THz frequency range with the maximum rectification level of 3.25, which is in good agreement with recent experiments on graphene ballistic diodes. The rectification levels are considerably higher for systems with narrower channels. In this case, the wave packet transmission probabilities and rectification rate also strongly depend on the energy of the incident wave packet, as a result of the quantum nature of energy levels along such channels. These findings can be useful for fundamental understanding of the charge carrier dynamics in graphene geometry diodes.",

keywords = "Continuum Dirac model, Graphene, Graphene geometric diode, Transmission probabilities, Wave packet propagation",

author = "M. Andelkovic and Rakhimov, {Kh Yu} and A. Chaves and Berdiyorov, {G. R.} and Milo{\v s}evi{\'c}, {M. V.}",

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AU - Andelkovic, M.

AU - Rakhimov, Kh Yu

AU - Chaves, A.

AU - Berdiyorov, G. R.

AU - Milošević, M. V.

PY - 2023/3

Y1 - 2023/3

N2 - Dynamics of electron wave-packets is studied using the continuum Dirac model in a graphene geometric diode where the propagation of the wave packet is favored in certain direction due to the presence of geometric constraints. Clear rectification is obtained in the THz frequency range with the maximum rectification level of 3.25, which is in good agreement with recent experiments on graphene ballistic diodes. The rectification levels are considerably higher for systems with narrower channels. In this case, the wave packet transmission probabilities and rectification rate also strongly depend on the energy of the incident wave packet, as a result of the quantum nature of energy levels along such channels. These findings can be useful for fundamental understanding of the charge carrier dynamics in graphene geometry diodes.

AB - Dynamics of electron wave-packets is studied using the continuum Dirac model in a graphene geometric diode where the propagation of the wave packet is favored in certain direction due to the presence of geometric constraints. Clear rectification is obtained in the THz frequency range with the maximum rectification level of 3.25, which is in good agreement with recent experiments on graphene ballistic diodes. The rectification levels are considerably higher for systems with narrower channels. In this case, the wave packet transmission probabilities and rectification rate also strongly depend on the energy of the incident wave packet, as a result of the quantum nature of energy levels along such channels. These findings can be useful for fundamental understanding of the charge carrier dynamics in graphene geometry diodes.

KW - Continuum Dirac model

KW - Graphene

KW - Graphene geometric diode

KW - Transmission probabilities

KW - Wave packet propagation

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Wave-packet propagation in a graphene geometric diode

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Keywords

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