Twist Gating of a Graphene Nanoribbon

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 m...

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Main Authors: Shubham Tyagi, Mohammed Ghadiyali, Udo Schwingenschlögl
Format: Article
Language:English
Published: Wiley-VCH 2025-05-01
Series:Advanced Electronic Materials
Subjects:
Online Access:https://doi.org/10.1002/aelm.202400697
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author Shubham Tyagi
Mohammed Ghadiyali
Udo Schwingenschlögl
author_facet Shubham Tyagi
Mohammed Ghadiyali
Udo Schwingenschlögl
author_sort Shubham Tyagi
collection DOAJ
description 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.
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spelling doaj-art-b2d6da49d14f49d8a056d294f290d60e2025-08-20T01:52:16ZengWiley-VCHAdvanced Electronic Materials2199-160X2025-05-01117n/an/a10.1002/aelm.202400697Twist Gating of a Graphene NanoribbonShubham Tyagi0Mohammed Ghadiyali1Udo Schwingenschlögl2Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi ArabiaPhysical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi ArabiaPhysical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi ArabiaAbstract 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.https://doi.org/10.1002/aelm.202400697graphenenanoribbonquantum transporttwistvalve
spellingShingle Shubham Tyagi
Mohammed Ghadiyali
Udo Schwingenschlögl
Twist Gating of a Graphene Nanoribbon
Advanced Electronic Materials
graphene
nanoribbon
quantum transport
twist
valve
title Twist Gating of a Graphene Nanoribbon
title_full Twist Gating of a Graphene Nanoribbon
title_fullStr Twist Gating of a Graphene Nanoribbon
title_full_unstemmed Twist Gating of a Graphene Nanoribbon
title_short Twist Gating of a Graphene Nanoribbon
title_sort twist gating of a graphene nanoribbon
topic graphene
nanoribbon
quantum transport
twist
valve
url https://doi.org/10.1002/aelm.202400697
work_keys_str_mv AT shubhamtyagi twistgatingofagraphenenanoribbon
AT mohammedghadiyali twistgatingofagraphenenanoribbon
AT udoschwingenschlogl twistgatingofagraphenenanoribbon