Low Temperature Physics: 43, 508 (2017); https://doi.org/10.1063/1.4983997
Fizika Nizkikh Temperatur: Volume 43, Number 4 (April 2017), p. 634-642    ( to contents , go back )

New data and development of views about hybridized state electron system of cobalt impurity atoms in mercury selenide crystal

T.E. Govorkova1, I.V. Zhevstovskikh1,2, A.T. Lonchakov1, V.I. Okulov1,2, K.A. Okulova1, S.M. Podgornykh1, S.B. Bobin1, V.V. Deryushkin1

L.D. Paranchich3

1Институт физики металлов им. М.Н. Михеева УрО РАН ул. С. Ковалевской, 18, г. Екатеринбург, 620990, Россия
E-mail: okulov@imp.uran.ru

2Уральский федеральный университет им. первого Президента России Б.Н. Ельцина пр. Ленина, 51, г. Екатеринбург, 620002, Россия

3Черновицкий национальный университет, ул. Коцюбинского, 2, г. Черновцы, 58012, Украина
pos Анотація:

Received January 25, 2017

Abstract

New experimental data concerning the manifestations of the effects of hybridization and spin polarization of the 3d-states of donor electrons of cobalt impurity atoms of low concentration in mercury selenide crystals are presented. There have been studied the Hall concentration and mobility of conduction electrons depending on impurity concentration, the temperature dependences of electron mobility, electron specific heat and elastic moduli in order to analyze the character of hybridization and spin polarization of electron states. The dependences observed were quantitatively interpreted on the base of before developed theory in justified simplified model one localization peak in electron density of states. As a result by using the consistent fit to experimental data, there were determined the values of the parameters of cobalt impurity hybridized states. In the temperature dependences of impurity part of electron specific heat and impurity contribution to elastic moduli one revealed the evidences of spontaneous spin polarization of electrons.

PACS: 72.80.Ey III–V and II–VI semiconductors;
PACS: 72.10.Fk Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect);
PACS: 72.20.Dp General theory, scattering mechanisms.

Key words: semiconductors, hybridization electron states, Hall concentration, electron mobility, electron specific heat, elastic moduli.

Published online: February 24, 2017

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