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This article is cited in 4 scientific papers (total in 4 papers)
CONDENSED MATTER
Low-temperature increase in the van der Waals friction force with the relative motion of metal plates
G. V. Dedkov Kabardino-Balkarian State University, Nalchik, 360004 Russia
Abstract:
The van der Waals friction force (dissipative fluctuation electromagnetic force) between metallic plates during their relative motion at temperatures close to $1$ K is calculated within the Levin–Polevoi–Rytov fluctuation electromagnetic theory. It is shown that the van der Waals friction force for gold plates with a small number of defects and low residual resistance ${{\rho }_{0}}$ can increase by six to eight orders of magnitude with a decrease in the temperature below $100$ K, reaching a maximum value proportional to ${{\rho }_{0}}^{{ - 4/5}}$. For superconducting metals, an increase in friction can be observed when the temperature decreases to the critical transition temperature, after which friction disappears. Another important result is the weak dependence of the friction force on the distance $a$ between the plates (${\propto}\, a^{-q} $ with $q<1$). The absolute values of the friction forces are achievable for measurements in experiments using the modern atomic force microscopy technique.
Received: 25.10.2021 Revised: 02.11.2021 Accepted: 03.11.2021
Citation:
G. V. Dedkov, “Low-temperature increase in the van der Waals friction force with the relative motion of metal plates”, Pis'ma v Zh. Èksper. Teoret. Fiz., 114:11 (2021), 779–784; JETP Letters, 114:11 (2021), 713–718
Linking options:
https://www.mathnet.ru/eng/jetpl6568 https://www.mathnet.ru/eng/jetpl/v114/i11/p779
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Abstract page: | 60 | References: | 18 | First page: | 8 |
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