Title: Magnetoresistance based determination of basic parameters of minority charge carriers in solid matter
Author(s):

	Y.O. Uhryn (Drohobych Ivan Franko State Pedagogical University, 24 I. Franko St., 82100 Drohobych, Ukraine) ,
	R.M. Peleshchak (Drohobych Ivan Franko State Pedagogical University, 24 I. Franko St., 82100 Drohobych, Ukraine) ,
	V.B. Brytan (Drohobych Ivan Franko State Pedagogical University, 24 I. Franko St., 82100 Drohobych, Ukraine) ,
	A.A. Velchenko (Belarusian State Agrarian Technical University, 99 Nezavisimosti Ave., 220023 Minsk, Belarus)

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.

Key words: conductor, semiconductor, magnetoresistance, Hall-effect
PACS: 72.15, 72.20

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