The Manganites as Metallic Semiconductors

TL;DR

This paper proposes a two-band model to explain the metallic and semiconducting behavior of manganites, accounting for the temperature dependence of electrical resistance through tight-binding calculations.

Contribution

It introduces a novel two-band model that captures the dual metallic and semiconducting properties of manganites, with theoretical calculations supporting its applicability.

Findings

Model explains the temperature maximum of electrical resistance

Calculations performed in the tight-binding approximation

Model applicable to manganites

Abstract

The two-band model possessing metal and semiconductor properties is offered. This model may explain the appearance of temperature maximum of the electrical resistance at the proper relationships between the parameters of the theory. The calculations are carried in the tight-binding approximation. The applicability of the model to the manganites is discussed.