Low Temperature Physics: 37, 572 (2011); https://doi.org/10.1063/1.3626835 (11 pages)
Fizika Nizkikh Temperatur: Volume 37, Number 7 (July 2011), p. 721-735    ( to contents , go back )

Natural negative refractive index media: Perspectives for complex transition metals oxides (Review Article)

E.L. Fertman and A.B. Beznosov

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: fertman@ilt.kharkov.ua
pos Анотація:

Received Jule 19, 2010

Abstract

Possibilities of colossal magnetoresistance (CMR) perovskites and some other complex oxides to possess natural negative refraction index (NRI) have been considered. Physical properties of the compounds have been analyzed from the point of view of the development of tunable metamaterials on their base. Temperature and magnetic field driven 1st order phase transformations in perovskite and spinel oxides leading to nanophase segregated states which may affect negative refraction properties are of particular interest. Magnetic field controllable metamaterials which use the CMR oxides as boundary NRI media for photonic crystals are considered as well.

PACS: 78.20.Ci Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients,emissivity);
PACS: 41.20.Jb Electromagnetic wave propagation; radiowave propagation;
PACS: 75.47.Gk Colossal magnetoresistance;
PACS: 75.47.Lx Magnetic oxides.

Key words: metamaterials, negative refraction, lefthand media, oxides, magnetoresistance.

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