Low Temperature Physics: 26, 171 (2000); https://doi.org/10.1063/1.593890 (23 pages)
Fizika Nizkikh Temperatur: Volume 26, Number 3 (March 2000), p. 231-261    ( to contents , go back )

Peculiar physical properties and colossal magnetoresistance of manganites

V. M. Loktev

Bogolyubov Institute for Theoretical Physics 14-b Metrolohichna Str., Kiev 03143, Ukraine
E-mail: vloktev@bitp.kiev.ua

Yu. G. Pogorelov

Departamento de Fisica, CFP/IFIMUP, Universidade do Porto, Rua Campo Alegre 687, 4150 Porto, Portugal
E-mail: ypogorel@fc.up.pt

(Received August 10, 1999, revised October 13, 1999 )

Abstract

An attempt made to analyze the most important physical properties of La-Ca-Mn-O type manganites, exhibiting the effect of colossal magnetoresistance. The main emphasis is centered on the specificity of these compounds that is reflected in their crystalline, electronic and magnetic structures and may be responsible for possible mechanisms of the considerable effect of external magnetic field on the transport properties of charge carriers in manganites. The joint action of the above factors ultimately provides a means for the metal-insulator phase transition sensitive to external magnetic field. One of the desirable and relevant goals of the paper is a discussion of the scientific problems in the physics of manganites.

PACS:
71.30.+h - Metal-insulator transitions and other electronic transitions
75.30.Vn -
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