Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/103376
Title: Local electronic transport across probe/ionic conductor interface in scanning probe microscopy
Authors: Romanyuk, K. N.
Alikin, D. O.
Slautin, B. N.
Tselev, A.
Shur, V. Y.
Kholkin, A. L.
Шур, В. Я.
Issue Date: 2021
Publisher: Elsevier B.V.
Citation: Local electronic transport across probe/ionic conductor interface in scanning probe microscopy / K. N. Romanyuk, D. O. Alikin, B. N. Slautin, et al. — DOI 10.1016/j.ultramic.2020.113147 // Ultramicroscopy. — 2021. — Vol. 220. — 113147.
Abstract: Charge carrier transport through the probe-sample junction can have substantial consequences for outcomes of electrical and electromechanical atomic-force-microscopy (AFM) measurements. For understanding physical processes under the probe, we carried out conductive-AFM (C-AFM) measurements of local current-voltage (I-V) curves as well as their derivatives on samples of a mixed ionic-electronic conductor Li1-xMn2O4 and developed an analytical framework for the data analysis. The implemented approach discriminates between contributions the highly resistive sample surface layer and the bulk with the account of ion redistribution in the field of the probe. It was found that, with increasing probe voltage, the conductance mechanism in the surface layer transforms from Pool-Frenkel to space-charge-limited current. The surface layer significantly alters the ion dynamics in the sample bulk under the probe, which leads, in particular, to a decrease of the effective electromechanical AFM signal associated with the ionic motion in the sample. The framework can be applied for the analysis of electronic transport mechanisms across the probe/sample interface as well as to uncover the role of the charge transport in the electric field distribution, mechanical, and other responses in AFM measurements of a broad spectrum of conducting materials. © 2020 Elsevier B.V.
Keywords: ATOMIC FORCE MICROSCOPY
ELECTRIC FIELDS
LITHIUM COMPOUNDS
MANGANESE COMPOUNDS
CONDUCTING MATERIALS
CURRENT VOLTAGE CURVE
ELECTRIC FIELD DISTRIBUTIONS
ELECTRONIC TRANSPORT
ION REDISTRIBUTION
MIXED IONIC ELECTRONIC CONDUCTOR (MIEC)
PHYSICAL PROCESS
SPACE CHARGE LIMITED CURRENTS
CARRIER TRANSPORT
ARTICLE
ATOMIC FORCE MICROSCOPY
CONTROLLED STUDY
DYNAMICS
ELECTRIC CURRENT
ELECTRIC FIELD
ELECTRIC POTENTIAL
ELECTRON TRANSPORT
SCANNING PROBE MICROSCOPY
SURFACE PROPERTY
URI: http://hdl.handle.net/10995/103376
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85094318187
PURE ID: 20114578
684ec812-d153-415a-a483-123ee002dacc
ISSN: 3043991
DOI: 10.1016/j.ultramic.2020.113147
metadata.dc.description.sponsorship: This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 and UIDP/50011/2020, financed by national funds through the Portuguese Foundation for Science and Technology/MCTES. The work was financially supported by the Portuguese Foundation for Science and Technology (FCT) within the project PTDC/CTM-ENE/6341/2014. It is also funded by national funds (OE), through FCT ? Funda??o para a Ci?ncia e a Tecnologia, I.P. in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19. The authors thank Daniele Rosato (Robert Bosch, GmbH) for providing samples of Li-battery cathodes and useful discussions. Equipment of the Ural Center for Shared Use ?Modern nanotechnology? of the Ural Federal University was used in the experiments. The work has been supported in part by the Ministry of Science and Higher Education of the Russian Federation under the project #FEUZ-2020-0054.
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