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

Journal Article · Fri Feb 07 00:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4864261· OSTI ID:22278142

Meshi, B. C.; Ershov, I. V. ^[1]; Nguyen, D. C. ^[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)

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.

• OSTI ID: 22278142
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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