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Title: Large on/off current ratio in hybrid graphene/BN nanoribbons by transverse electric field-induced control of bandgap

We propose an approach to design efficient electronic switches based on Graphene/BN heterostructures. By means of atomistic Tight Binding simulations, we investigate heterostructures made of an armchair BN nanoribbon sided by two armchair graphene ribbons where a significant bandgap can be opened. In particular, we show that a bandgap of about 0.55 eV can be strongly suppressed by applying a relatively weak transverse electric field of 10 mV/A. Additionally, by using non-equilibrium Green's function simulation, we show that this effect can be used to control the current in electron devices even at small bias and small length. An on/off current ratio higher than 10{sup 4} is achieved at room temperature.
Authors:
; ;  [1]
  1. Institute of Fundamental Electronics, University of Paris-sud, CNRS, UMR 8622 Orsay (France)
Publication Date:
OSTI Identifier:
22311342
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; BORON NITRIDES; CURRENTS; ELECTRIC FIELDS; EQUILIBRIUM; EV RANGE; GRAPHENE; GREEN FUNCTION; HYBRID SYSTEMS; NANOSTRUCTURES; SIMULATION; SWITCHES; TEMPERATURE RANGE 0273-0400 K