期刊
APPLIED PHYSICS LETTERS
卷 106, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4914324
关键词
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资金
- Center for Low Energy Systems Technology (LEAST) one of six centers of STARnet, a Semiconductor Research Corporation program by MARCO
- DARPA
A theory is developed for calculating vertical tunneling current between two sheets of bilayer graphene separated by a thin, insulating layer of hexagonal boron nitride, neglecting many-body effects. Results are presented using physical parameters that enable comparison of the theory with recently reported experimental results. Observed resonant tunneling and negative differential resistance in the current-voltage characteristics are explained in terms of the electrostatically-induced band gap, gate voltage modulation, density of states near the band edge, and resonances with the upper sub-band. These observations are compared to ones from similar heterostructures formed with monolayer graphene. (C) 2015 AIP Publishing LLC.
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