Origin of the repulsive Casimir force in giant polarization-interconversion materials
arXiv:2210.17285 · doi:10.1103/PhysRevApplied.16.044047
Abstract
Achieving strong repulsive Casimir forces through engineered coatings can pave the way for micro- and nano-electromechanical applications where adhesive forces currently cause reliability issues. Here, we exploit Lifshitz theory to identify the requirements for repulsive Casimir forces in gyrotropic media for two limiting cases (ultra-strong gyroelectric and non-gyroelectric). We show that the origin of repulsive force in media with strong gyrotropy such as Weyl semi-metals arises from the giant interconversion of polarization of vacuum fluctuations.
9 pages, 4 figures
References in corpus (7)
- Quantum spin Hall effect of light
- Anomalous Hall Effect in Weyl Metals
- Tunable Casimir repulsion with three dimensional topological insulators
- Chiral anomaly and optical absorption in Weyl semimetals
- Casimir Force Phase Transitions in the Graphene Family
- Repulsive Casimir force between Weyl semimetals
- Anomalous temperature dependence of the Casimir force for thin metal films