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: Contribution to journal › Article › peer-review

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
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 - Oct 2013

Keywords

graphene nanoribbon
edge modes
mode-matching method

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10.7566/JPSJ.82.104707

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title = "Mode-Matching Approach to Current Blocking Effect in Graphene Nanoribbons",

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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author = "Hai-Yao Deng and Katsunori Wakabayashi and Chi-Hang Lam",

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AU - Deng, Hai-Yao

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AU - Lam, Chi-Hang

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Y1 - 2013/10

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 - graphene nanoribbon

KW - edge modes

KW - mode-matching method

U2 - 10.7566/JPSJ.82.104707

DO - 10.7566/JPSJ.82.104707

M3 - Article

SN - 0031-9015

VL - 82

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 10

ER -

Mode-Matching Approach to Current Blocking Effect in Graphene Nanoribbons

Abstract

Keywords

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