skip to main content

SciTech ConnectSciTech Connect

Title: Magnetism and transport properties of zigzag graphene nanoribbons/hexagonal boron nitride heterostructures

Results of ab initio study of magnetism and transport properties of charge carriers in zigzag graphene nanoribbons (ZGNR) on hexagonal boron nitride (h-BN(0001)) substrate are presented within the density functional theory framework. Peculiarities of the interface band structure and its role in the formation of magnetism and transport properties of the ZGNR/h-BN(0001) heterostructure have been studied using two different density functional approximations. The effect of the substrate and graphene nanoribbons width on the low-energy spectrum of π-electrons, local magnetic moments on atoms of interface, and charge carriers mobility in the ZGNR/h-BN(0001) heterostructures have been established for the first time. The regularity consisting in the charge carrier mobility growth with decrease of dimers number in nanoribbon was also established. It is found that the charge carriers mobility in the N-ZGNR/h-BN(0001) (N—number of carbon (C) dimers) heterostructures is 5% higher than in freestanding ZGNR.
Authors:
; ; ;  [1] ;  [2]
  1. Don State Technical University, 1 Gagarin Sq, 344000 Rostov on Don (Russian Federation)
  2. Department of Electronic Materials, School of Engineering Physics, Hanoi University of Science and Technology, 1 Dai Co Viet Rd, 10000 Hanoi (Viet Nam)
Publication Date:
OSTI Identifier:
22278142
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; APPROXIMATIONS; BORON NITRIDES; CARRIER MOBILITY; CHARGE CARRIERS; DENSITY FUNCTIONAL METHOD; DIMERS; ELECTRIC CONDUCTIVITY; ELECTRONS; ENERGY SPECTRA; GRAPHENE; HETEROJUNCTIONS; INTERFACES; MAGNETIC MOMENTS; MAGNETISM; NANOSTRUCTURES; SUBSTRATES