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Tuning the Casimir-Lifshitz force with gapped metals
Centre of Excellence ENSEMBLE 3 Sp. z o. o., Wolczynska Str. 133, 01-919 Warsaw, Poland.
Centre of Excellence ENSEMBLE 3 Sp. z o. o., Wolczynska Str. 133, 01-919 Warsaw, Poland.
Centre of Excellence ENSEMBLE 3 Sp. z o. o., Wolczynska Str. 133, 01-919 Warsaw, Poland.
Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway.
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2023 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 108, no 16, article id 165306Article in journal (Refereed) Published
Abstract [en]

The Casimir-Lifshitz interaction, a long-range force that arises between solids and molecules due to quantum fluctuations in electromagnetic fields, has been widely studied in solid-state physics. The degree of polarization in this interaction is influenced by the dielectric properties of the materials involved, which in turn are determined by factors such as band-to-band transitions, free carrier contributions, phonon contributions, and exciton contributions. Gapped metals, a new class of materials with unique electronic structures, offer the potential to manipulate dielectric properties and, consequently, the Casimir-Lifshitz interaction. In this study, we theoretically investigate the finite temperature Casimir-Lifshitz interaction in La3Te4-based gapped metal systems with varying off-stoichiometry levels. We demonstrate that off-stoichiometric effects in gapped metals can be used to control the magnitude and, in some cases, even the sign of Casimir-Lifshitz interactions. We predict measurable corrections due to stoichiometry on the predicted Casimir force between a La3Te4 surface and a gold sphere, attached to an atomic force microscopy tip.

Place, publisher, year, edition, pages
American Physical Society (APS) , 2023. Vol. 108, no 16, article id 165306
National Category
Condensed Matter Physics
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URN: urn:nbn:se:kth:diva-340268DOI: 10.1103/PhysRevB.108.165306ISI: 001095278000004Scopus ID: 2-s2.0-85177615816OAI: oai:DiVA.org:kth-340268DiVA, id: diva2:1816200
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QC 20231201

Available from: 2023-12-01 Created: 2023-12-01 Last updated: 2024-06-11Bibliographically approved

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Persson, Clas

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