Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 2, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4733618
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Funding
- National Natural Science Foundation of China [61071015, 61101009, 11004018]
- Scientific Research Fund of Hunan Provincial Science and Technology Agency [2011FJ3089]
- Scientific Research Fund of Hunan Provincial Education Department [11B008]
- construct program of the key discipline in Hunan Province
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Based on density-function theory combined with nonequilibrium Green's function method, the electronic transport properties of twisted armchair- and zigzag-edge graphene nanoribbons (AGNRs and ZGNRs) are investigated. Results show that electronic transport properties are sensitive to twisting deformations for semiconductor-type AGNRs, but are robust against twisting deformations for quasi-metallic AGNRs and ZGNRs. The electronic conduction becomes weaker gradually for moderate-gap semiconductor-type AGNRs, but gets stronger for wide-gap semiconductor-type AGNRs when the twisted angle increases to 120 degrees. While for quasi-metallic AGNRs and ZGNRs, the electronic conduction is strong and obeys Ohm's law of resistance strictly. Mechanisms for such results are suggested. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4733618]
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