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- Lee, Geunsik
- Computational Research on Electronic Structure and Transport in Condensed Materials
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Electronic transport across metal-graphene edge contact
- Author(s)
- Gong, Cheng, Zhang, Chenxi, Oh, Young Jun, Wang, Weichao, Lee, Geunsik, Shan, Bin, Wallace, Robert M., Cho, Kyeongjae
- Issued Date
- 2017-06
- Citation
- 2D MATERIALS, v.4, no.2, pp.025033
- Abstract
- The electronic transport across metal-graphene edge-contact structures is studied by first principles methods. Unusual double-dip transmission as a function of Fermi level is found for a Pd electrode over varying grapheme lengths. Interface metal-carbon hybridization is shown to introduce random distribution of pi-orbital local density of states at different carbon sites leading to transmission suppression. For a Ti electrode, two dips are merged into one with a similar to 0.2 eV transport gap opening. Our work sheds light on the origin of intrinsic contact resistance at metal-graphene edge contact.
- Publisher
- IOP PUBLISHING LTD
- ISSN
- 2053-1583
- Keyword (Author)
- metal-graphene, edge contact, electronic transport
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