Twist Gating of a Graphene Nanoribbon

Shubham Tyagi; Mohammed Ghadiyali; Udo Schwingenschlögl

doi:10.1002/aelm.202400697

Twist Gating of a Graphene Nanoribbon

Shubham Tyagi, Mohammed Ghadiyali, Udo Schwingenschlögl^*

^*Corresponding author for this work

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

Abstract

Employing first-principles calculations and the non-equilibrium Green's function method, a hexa-peri-hexabenzocoronene nanoflake is investigated on an armchair graphene nanoribbon. It turns out that a current modulation of up to 25% can be achieved by twisting of the nanoflake due to modulated scattering as a consequence of changes in the orbital overlap. The effect of twist gating is reminiscent of current control by electrostatic gating with a large variety of potential applications.

Original language	English (US)
Article number	2400697
Journal	Advanced Electronic Materials
Volume	11
Issue number	7
DOIs	https://doi.org/10.1002/aelm.202400697
State	Published - May 2025

Keywords

graphene
nanoribbon
quantum transport
twist
valve

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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10.1002/aelm.202400697

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abstract = "Employing first-principles calculations and the non-equilibrium Green's function method, a hexa-peri-hexabenzocoronene nanoflake is investigated on an armchair graphene nanoribbon. It turns out that a current modulation of up to 25\% can be achieved by twisting of the nanoflake due to modulated scattering as a consequence of changes in the orbital overlap. The effect of twist gating is reminiscent of current control by electrostatic gating with a large variety of potential applications.",

keywords = "graphene, nanoribbon, quantum transport, twist, valve",

author = "Shubham Tyagi and Mohammed Ghadiyali and Udo Schwingenschl{\"o}gl",

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AU - Schwingenschlögl, Udo

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AB - Employing first-principles calculations and the non-equilibrium Green's function method, a hexa-peri-hexabenzocoronene nanoflake is investigated on an armchair graphene nanoribbon. It turns out that a current modulation of up to 25% can be achieved by twisting of the nanoflake due to modulated scattering as a consequence of changes in the orbital overlap. The effect of twist gating is reminiscent of current control by electrostatic gating with a large variety of potential applications.

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KW - nanoribbon

KW - quantum transport

KW - twist

KW - valve

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Twist Gating of a Graphene Nanoribbon

Abstract

Keywords

ASJC Scopus subject areas

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