Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Negative Electrical Conductivity Metamaterials

Version 1 : Received: 25 March 2022 / Approved: 28 March 2022 / Online: 28 March 2022 (08:56:05 CEST)

How to cite: Bormashenko, E. Negative Electrical Conductivity Metamaterials. Preprints 2022, 2022030357 (doi: 10.20944/preprints202203.0357.v1). Bormashenko, E. Negative Electrical Conductivity Metamaterials. Preprints 2022, 2022030357 (doi: 10.20944/preprints202203.0357.v1).

Abstract

The system of non-interacting electrically charged core-massless spring-shell mechanical units, demonstrating negative effective mass, is considered, seen as a Drude-Lorentz gas. When such an ideal gas is exposed to the external harmonic field, it demonstrates as the certain conditions the negative frequency-dependent electrical conductivity. The negative value of the electrical conductivity implies that the electrical current will flow against the direction of the electric field and correspondingly the direction of the electrical force. Low- and high-frequency asymptotic behavior of the electrical conductivity is addressed. The same system demonstrates at low frequencies the negative asymptotic refraction. Experimental realization of the introduced model system, based on the exploitation of plasma oscillations of the free electron gas is suggested.

Keywords

metamaterial; negative electrical conductivity; negative mass; Drude-Lorentz model; negative refraction

Subject

MATERIALS SCIENCE, General Materials Science

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