Demonstration of the Casimir Force between Ferromagnetic Surfaces of a Ni-Coated Sphere and a Ni-Coated Plate

A. A. Banishev, G. L. Klimchitskaya, V. M. Mostepanenko, and U. Mohideen

Phys. Rev. Lett. 110, 137401 – Published 25 March 2013

Abstract

We demonstrate the Casimir interaction between two ferromagnetic boundary surfaces using the dynamic atomic force microscope. The experimental data are found to be in excellent agreement with the predictions of the Lifshitz theory for magnetic boundary surfaces combined with the plasma model approach. It is shown that for magnetic materials the role of hypothetical patch potentials is opposite to that required for reconciliation of the data with the Drude model.

Received 31 August 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.137401

Authors & Affiliations

A. A. Banishev¹, G. L. Klimchitskaya², V. M. Mostepanenko², and U. Mohideen¹

¹Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
²Central Astronomical Observatory at Pulkovo of the Russian Academy of Sciences, St. Petersburg 196140, Russia