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Electron-phonon interaction, magnetic phase transition, charge density waves, and resistive switching in VS2 and VSe2 revealed by Yanson point-contact spectroscopy

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dc.contributor.author Bashlakov, D. L. en_US
dc.contributor.author Kvitnitskaya, O. E. en_US
dc.contributor.author Aswartham, S. en_US
dc.contributor.author Shipunov, G. en_US
dc.contributor.author HARNAGEA, LUMINITA en_US
dc.contributor.author Efremov, D. V. en_US
dc.contributor.author Büchner, B. en_US
dc.contributor.author Naidyuk, Yu. G. en_US
dc.date.accessioned 2024-08-28T05:17:40Z
dc.date.available 2024-08-28T05:17:40Z
dc.date.issued 2024-08 en_US
dc.identifier.citation Low Temperature Physics, 50(08), 676–682 en_US
dc.identifier.issn 1063-777X en_US
dc.identifier.uri https://doi.org/10.1063/10.0027924 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/9038
dc.description.abstract VS2 and VSe2 have attracted particular attention among the transition metals dichalcogenides because of their promising physical properties concerning magnetic ordering, charge density wave (CDW), emergent superconductivity, etc., which are very sensitive to stoichiometry and dimensionality reduction. Yanson point-contact (PC) spectroscopic study reveals metallic and nonmetallic states in VS2 PCs, as well as a magnetic phase transition, was detected near 20 K. The rare PC spectra, where the magnetic phase transition was not visible, show a broad maximum of around 20 mV, likely connected with electron-phonon interaction (EPI). The PC spectra of VSe2 demonstrate metallic behavior, which allowed us to detect features associated with EPI and CDW transition. The Kondo effect appeared for both compounds, apparently due to interlayer vanadium ions. Besides, the resistive switching was observed in PCs on VSe2 between a low resistive, mainly metallic-type state, and a high resistive nonmetallic-type state by applying bias voltage (about 0.4 V). Reverse switching occurs by applying a voltage of opposite polarity (about 0.4 V). The reason may be the alteration of stoichiometry in the PC core due to the displacement of V ions to interlayer under a high electric field. The observed resistive switching characterizes VSe2 as a potential material, e.g., for non-volatile resistive RAM, neuromorphic engineering, and other nanoelectronic applications. Per contra, VS2 attracts attention as a rare layered van der Waals compound with magnetic transition. en_US
dc.language.iso en en_US
dc.publisher AIP Publishing en_US
dc.subject Physics en_US
dc.subject 2024 en_US
dc.subject 2024-AUG-WEEK1 en_US
dc.subject TOC-AUG-2024 en_US
dc.title Electron-phonon interaction, magnetic phase transition, charge density waves, and resistive switching in VS2 and VSe2 revealed by Yanson point-contact spectroscopy en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Low Temperature Physics en_US
dc.publication.originofpublisher Foreign en_US


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