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conferenceseries
.com
Joint Conference
July 17-18, 2017 Chicago, USA
International Conference on
DIAMOND AND CARBON MATERIALS & GRAPHENE AND SEMICONDUCTORS
Volume 6, Issue 6 (Suppl)
J Material Sci Eng, an open access journal
ISSN: 2169-0022
Diamond and Carbon 2017 & Graphene 2017
July 17-18, 2017
Polar catastrophe at the MgO(100)/SnO
2
(110) interface
Arwa Albar
and
Udo Schwingenschlogl
King Abdullah University of Science and Technology, Saudi Arabia
F
irst principles calculations, based on density functional theory, are used to investigate the structural and electronic properties
of the epitaxial MgO(100)/SnO
2
(110) interface of wide band gap insulators. Depending on the interface termination,
nonmagnetic metallic and half-metallic interface states are observed. The formation of these states is explained by a polar
catastrophe model for nonpolar–polar interfaces. Strong lattice distortions and buckling develop in SnO
2
, which influence the
interface properties as the charge discontinuity is partially screened. Already a single unit cell of SnO
2
is sufficient to drive the
polar catastrophe scenario.
Biography
In April 2017, Dr. Arwa Albar earned her Ph.D degree in Material Science and Engineering from King Abdullah University of Science and Technology, Saudi Arabia.
Her research is based on Density functional theory calculation that is used to investigate the electronic, magnetic, and structural properties of oxide materials under
defects and interfaces. She is also a staff in the Physics Department of King AbdulAziz University since 2004.
arwa.albar@kaust.edu.saArwa Albar et al., J Material Sci Eng 2017, 6:6(Suppl)
DOI: 10.4172/2169-0022-C1-077