Effect of ferroelectric domains on electric properties of single layer graphene
authors Zelenovskii, P; Romanyuk, K; Vidyasagar, R; Akhmatkhanov, A; Zhao, P; Shur, VY; Kholkin, AL
nationality International
journal FERROELECTRICS
author keywords Graphene; ferroelectrics; domain structure; PPLN; confocal Raman microscopy; electric fields
keywords STRONG PIEZOELECTRICITY; RAMAN
abstract Ferroelectric materials with tailored domain structures are promising smart substrates providing additional degrees of functionality for the graphene-based devices. We demonstrate the effect of periodical domain structure in lithium niobate substrate on the electrical properties of graphene studied by Raman spectroscopy. The spatial variations of the charge carriers and Fermi levels in graphene corresponding to oppositely polarized domains have been elucidated. The observed effects are supposed to be driven by the lateral component of electric field at the surface related to the gradient of spontaneous polarization. The five orders of magnitude decay of charge density in graphene is due to screening of depolarization field.
publisher TAYLOR & FRANCIS LTD
issn 0015-0193
isbn 1563-5112
year published 2019
volume 542
issue 1
beginning page 93
ending page 101
digital object identifier (doi) 10.1080/00150193.2019.1574669
web of science category Materials Science, Multidisciplinary; Physics, Condensed Matter
subject category Materials Science; Physics
unique article identifier WOS:000475389100014
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 0.669
5 year journal impact factor 0.718
category normalized journal impact factor percentile 9.089
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