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 |
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Article number | 325302 |
Journal | Journal of Physics Condensed Matter |
Volume | 30 |
Issue number | 32 |
DOIs | |
Publication status | Published - 17 Jul 2018 |
Keywords
- DFT
- ballistic injection
- contact resistance
- grapheme
- graphite