Electrical contact resistance in graphite-graphene contacts from ab initio methods

Ferran Jovell; Xavier Cartoixà

doi:10.1088/1361-648X/aacd83

Electrical contact resistance in graphite-graphene contacts from ab initio methods

Ferran Jovell, Xavier Cartoixà

Department of Electronic Engineering

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

2 Citations (Scopus)

Abstract

© 2018 IOP Publishing Ltd. We study the ballistic transmission and the contact resistance (R c) of a graphite-graphene contact in a top contact geometry from first principles. We find that the calculated R c's depend on the amount of graphene-graphite overlap, but quickly saturate for transfer lengths of the order of a few tens of Å. For contacts overlapping more than this transfer length, the R c can be lower than the 100 mark. On the other hand, edge graphite-graphene contacts are expected to have very low contact resistance.

Original language	English
Article number	325302
Journal	Journal of Physics Condensed Matter
Volume	30
Issue number	32
DOIs	https://doi.org/10.1088/1361-648X/aacd83
Publication status	Published - 17 Jul 2018

Keywords

DFT
ballistic injection
contact resistance
grapheme
graphite

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title = "Electrical contact resistance in graphite-graphene contacts from ab initio methods",

abstract = "{\textcopyright} 2018 IOP Publishing Ltd. We study the ballistic transmission and the contact resistance (R c) of a graphite-graphene contact in a top contact geometry from first principles. We find that the calculated R c's depend on the amount of graphene-graphite overlap, but quickly saturate for transfer lengths of the order of a few tens of {\AA}. For contacts overlapping more than this transfer length, the R c can be lower than the 100 mark. On the other hand, edge graphite-graphene contacts are expected to have very low contact resistance.",

keywords = "DFT, ballistic injection, contact resistance, grapheme, graphite",

author = "Ferran Jovell and Xavier Cartoix{\`a}",

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T1 - Electrical contact resistance in graphite-graphene contacts from ab initio methods

AU - Jovell, Ferran

AU - Cartoixà, Xavier

PY - 2018/7/17

Y1 - 2018/7/17

N2 - © 2018 IOP Publishing Ltd. We study the ballistic transmission and the contact resistance (R c) of a graphite-graphene contact in a top contact geometry from first principles. We find that the calculated R c's depend on the amount of graphene-graphite overlap, but quickly saturate for transfer lengths of the order of a few tens of Å. For contacts overlapping more than this transfer length, the R c can be lower than the 100 mark. On the other hand, edge graphite-graphene contacts are expected to have very low contact resistance.

AB - © 2018 IOP Publishing Ltd. We study the ballistic transmission and the contact resistance (R c) of a graphite-graphene contact in a top contact geometry from first principles. We find that the calculated R c's depend on the amount of graphene-graphite overlap, but quickly saturate for transfer lengths of the order of a few tens of Å. For contacts overlapping more than this transfer length, the R c can be lower than the 100 mark. On the other hand, edge graphite-graphene contacts are expected to have very low contact resistance.

KW - DFT

KW - ballistic injection

KW - contact resistance

KW - grapheme

KW - graphite

U2 - 10.1088/1361-648X/aacd83

DO - 10.1088/1361-648X/aacd83

M3 - Article

VL - 30

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

SN - 0953-8984

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