Casimir force between atomically thin gold films
2013 (English)In: European Physical Journal B: Condensed Matter Physics, ISSN 1434-6028, E-ISSN 1434-6036, Vol. 86, no 2, 43- p.Article in journal (Refereed) Published
We have used density functional theory to calculate the anisotropic dielectric functions for ultrathin gold sheets (composed of 1, 3, 6, and 15 atomic layers). Such films are important components in nano-electromechanical systems. When using correct dielectric functions rather than bulk gold dielectric functions we predict an enhanced attractive Casimir-Lifshitz force (at most around 20%) between two atomically thin gold sheets. For thicker sheets the dielectric properties and the corresponding Casimir forces approach those of gold half-spaces. The magnitude of the corrections that we predict should, within the today's level of accuracy in Casimir force measurements, be clearly detectable.
Place, publisher, year, edition, pages
2013. Vol. 86, no 2, 43- p.
Der-Waals Forces, Mu-M Range, Lifshitz Theory, Liquid Helium, Van
IdentifiersURN: urn:nbn:se:kth:diva-120557DOI: 10.1140/epjb/e2012-31051-9ISI: 000316064100014ScopusID: 2-s2.0-84878501056OAI: oai:DiVA.org:kth-120557DiVA: diva2:616063
FunderSwedish Research Council, 90499401 70529001
QC 201304152013-04-152013-04-112013-09-06Bibliographically approved