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TMF, 2019, Volume 201, Number 1, Pages 137–148 (Mi tmf9714)  

Effect of phonons on the magnetic characteristics of metals at finite temperatures

N. B. Melnikova, G. V. Paradezhenkoa, B. I. Reserb

a Lomonosov Moscow State University, Moscow, Russia
b Mikheev Institute of Metal Physics, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia

Abstract: We consider the electron–phonon interaction in the framework of dynamic spin-fluctuation theory and obtain an expression for the self-energy part that depends explicitly on the spin fluctuations and lattice vibrations. We illustrate the theoretical results with the example of iron. We show that the effect of phonons on temperature dependence of the magnetic characteristics of metals is appreciable but not as large as in the static single-site approximation of the spin-fluctuation theory and spin dynamics using classical Hamiltonians.

Keywords: spin fluctuation, phonon, magnetization, magnetic susceptibility, local magnetic moment, temperature dependence, ferromagnetic metal.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation AAAA-A18-118020190098-5
Ural Branch of the Russian Academy of Sciences 18-2-2-11
This research was performed within the state assignment of the Ministry of Science and Education of Russia (Theme “Electron” No. AAAA-A18-118020190098-5) and was supported in part by a program of the Ural Branch of Russian Academy of Sciences (Project No. 18-2-2-11).


DOI: https://doi.org/10.4213/tmf9714

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English version:
Theoretical and Mathematical Physics, 2019, 201:1, 1531–1540

Bibliographic databases:

Received: 26.02.2019
Revised: 06.04.2019

Citation: N. B. Melnikov, G. V. Paradezhenko, B. I. Reser, “Effect of phonons on the magnetic characteristics of metals at finite temperatures”, TMF, 201:1 (2019), 137–148; Theoret. and Math. Phys., 201:1 (2019), 1531–1540

Citation in format AMSBIB
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