Magnetoresistance based determination of basic parameters of minority charge carriers in solid matter

TL;DR

This paper uses magnetoresistance within a two-band model to determine basic parameters of minority charge carriers in solids, suggesting their significant role in superconductivity.

Contribution

It introduces a criterion for applying the two-band model to various materials and explores the role of minority carriers in superconductivity.

Findings

Minority charge carriers influence superconductivity emergence.

Temperature dependences of carrier parameters were analyzed.

The two-band model criterion was established.

Abstract

Magnetoresistance as a tool of basic parameters determination of minority charge carriers and the ratio of minority charge carriers conductivity to majority ones in solid matter has been considered within the framework of the phenomenological two-band model. The criterion of the application of this model has been found. As examples of these equations usage the conductor, semiconductor and superconductor have been introduced. From the obtained temperature dependences of the aforementioned values in superconductor, a supposition of a deciding role of minority charge carriers in the emergence of superconductivity state has been made.