Mode-matching approach to current blocking effect in graphene nanoribbons

Hai Yao Deng; Katsunori Wakabayashi; Chi Hang Lam

doi:10.7566/JPSJ.82.104707

Mode-matching approach to current blocking effect in graphene nanoribbons

Hai Yao Deng, Katsunori Wakabayashi, Chi Hang Lam

Research output: Journal article publication › Journal article › Academic research › peer-review

8 Citations (Scopus)

Abstract

Zigzag graphene nanoribbon (ZGNR) p-n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the mode-matching method and derive analytical solutions for the transmission probability. It is pointed out that the randomness of the interface tilting destroys the parity effect if the spread of the tilting parameter is larger than the lattice constant. We discuss the origin of the parity effect in connection with the lattice symmetry. Junctions with bearded ZGNRs are shown to strongly suppress electron transmission.

Original language	English
Article number	104707
Journal	Journal of the Physical Society of Japan
Volume	82
Issue number	10
DOIs	https://doi.org/10.7566/JPSJ.82.104707
Publication status	Published - 1 Oct 2013

Keywords

Edge modes
Graphene nanoribbon
Mode-matching method

ASJC Scopus subject areas

General Physics and Astronomy

More information

10.7566/JPSJ.82.104707

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abstract = "Zigzag graphene nanoribbon (ZGNR) p-n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the mode-matching method and derive analytical solutions for the transmission probability. It is pointed out that the randomness of the interface tilting destroys the parity effect if the spread of the tilting parameter is larger than the lattice constant. We discuss the origin of the parity effect in connection with the lattice symmetry. Junctions with bearded ZGNRs are shown to strongly suppress electron transmission.",

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N2 - Zigzag graphene nanoribbon (ZGNR) p-n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the mode-matching method and derive analytical solutions for the transmission probability. It is pointed out that the randomness of the interface tilting destroys the parity effect if the spread of the tilting parameter is larger than the lattice constant. We discuss the origin of the parity effect in connection with the lattice symmetry. Junctions with bearded ZGNRs are shown to strongly suppress electron transmission.

AB - Zigzag graphene nanoribbon (ZGNR) p-n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the mode-matching method and derive analytical solutions for the transmission probability. It is pointed out that the randomness of the interface tilting destroys the parity effect if the spread of the tilting parameter is larger than the lattice constant. We discuss the origin of the parity effect in connection with the lattice symmetry. Junctions with bearded ZGNRs are shown to strongly suppress electron transmission.

KW - Edge modes

KW - Graphene nanoribbon

KW - Mode-matching method

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IS - 10

M1 - 104707

ER -

Mode-matching approach to current blocking effect in graphene nanoribbons

Abstract

Keywords

ASJC Scopus subject areas

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