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Observation of the Kondo Effect in Multilayer Single-Crystalline VTe Nanoplates.

07:00 EST 8th November 2019 | BioPortfolio

Summary of "Observation of the Kondo Effect in Multilayer Single-Crystalline VTe Nanoplates."

We report the chemical vapor deposition (CVD) growth, characterization, and low-temperature magnetotransport of 1T phase multilayer single-crystalline VTe nanoplates. The transport studies reveal that no sign of intrinsic long-range ferromagnetism but localized magnetic moments exist in the individual multilayer metallic VTe nanoplates. The localized moments give rise to the Kondo effect, evidenced by logarithmical increment of resistivity with decreasing temperature and negative magnetoresistance (NMR) regardless of the direction of magnetic field at temperatures below the resistivity minimum. The low-temperature resistivity upturn is well described by the Hamann equation, and the NMR at different temperatures, manifestation of the magnetization of the localized spins, is well fitted to a Brillouin function for = 1/2. Density functional theory (DFT) calculations reveal that the localized magnetic moments mainly come from the interstitial vanadium ions in the VTe nanoplates. Our results will shed light on the study of magnetic properties, strong correlation, and many-body physics in two-dimensional metallic transition metal dichalcogenides.

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This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992
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