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Title: Electric field and substrate–induced modulation of spin-polarized transport in graphene nanoribbons on A3B5 semiconductors

In this work, we present the density functional theory calculations of the effect of an oriented electric field on the electronic structure and spin-polarized transport in a one dimensional (1D) zigzag graphene nanoribbon (ZGNR) channel placed on a wide bandgap semiconductor of the A3B5 type. Our calculations show that carrier mobility in the 1D semiconductor channel of the ZGNR/A3B5(0001) type is in the range from 1.7×10{sup 4} to 30.5×10{sup 4} cm{sup 2}/Vs and can be controlled by an electric field. In particular, at the critical value of the positive potential, even though hole mobility in an one-dimensional 8-ZGNR/h-BN semiconductor channel for spin down electron subsystems is equal to zero, hole mobility can be increased to 4.1×10{sup 5} cm{sup 2}/Vs for spin up electron subsystems. We found that band gap and carrier mobility in a 1D semiconductor channel of the ZGNR/A3B5(0001) type depend strongly on an external electric field. With these extraordinary properties, ZGNR/A3B5(0001) can become a promising materials for application in nanospintronic devices.
Authors:
; ;  [1] ;  [2]
  1. Don State Technical University, 1 Gagarin Sq, 344000 Rostov on Don (Russian Federation)
  2. Institute of Research and Development, Duy Tan University, Da Nang (Viet Nam)
Publication Date:
OSTI Identifier:
22402995
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 77 NANOSCIENCE AND NANOTECHNOLOGY; BORON NITRIDES; CARRIER MOBILITY; DENSITY FUNCTIONAL METHOD; ELECTRIC FIELDS; ELECTRONIC STRUCTURE; ELECTRONS; GRAPHENE; HOLE MOBILITY; MODULATION; NANOSTRUCTURES; POTENTIALS; SEMICONDUCTOR MATERIALS; SPIN; SPIN ORIENTATION; SUBSTRATES