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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2021, Volume 113, Issue 12, Pages 833–847
DOI: https://doi.org/10.31857/S1234567821120090 (Mi jetpl6452) 		 
This article is cited in 13 scientific papers (total in 13 papers)

CONDENSED MATTER

Stability and lifetimes of magnetic states of nano- and microstructures (brief review)

I. S. Lobanovab, M. N. Potkinaab, V. M. Uzdinab

a Faculty of Physics, St. Petersburg State University, St. Petersburg, 199034 Russia
b Faculty of Physics, ITMO University, St. Petersburg, 197101 Russia
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DOI: https://doi.org/10.31857/S1234567821120090
Abstract: A statistical approach is presented to estimate the stability of magnetic states of nano- and microstructures to thermal fluctuations and random external actions. It implies the construction of the multidimensional energy surface of a system, search for the minimum energy paths between locally stable states on this surface, and calculation of rates of magnetic transitions between corresponding magnetic configurations at arbitrary temperatures in the harmonic approximation of the transition state theory. Lifetimes of quasi-two-dimensional topologically protected magnetic structures have been studied. The effect of magnetic characteristics of a medium limited by the geometry of a sample, nonmagnetic defects, and external magnetic field on the lifetimes of topological magnetic states has been shown.
Funding agency Grant number
Russian Foundation for Basic Research 18-02-00267-А
19-32-90048-Аспиранты
Foundation for the Development of Theoretical Physics and Mathematics BASIS 19-1-1-12-1
19-1-1-12-2
Russian Science Foundation 19-42-06302
This work was supported in part by the Russian Foundation for Basic Research (project nos. 18-02-00267-A and 19-32-90048-Aspiranty), by the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS (project no. 19-1-1-12-1,2), and jointly by the Russian Science Foundation and Helmholtz Foundation (project no. 19-42-06302, development of methods of the calculation of lifetimes of magnetic states for systems with millions of degrees of freedom).
Received: 08.05.2021
Revised: 18.05.2021
Accepted: 20.05.2021
English version:
Journal of Experimental and Theoretical Physics Letters, 2021, Volume 113, Issue 12, Pages 801–813
DOI: https://doi.org/10.1134/S0021364021120109
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: I. S. Lobanov, M. N. Potkina, V. M. Uzdin, “Stability and lifetimes of magnetic states of nano- and microstructures (brief review)”, Pis'ma v Zh. Èksper. Teoret. Fiz., 113:12 (2021), 833–847; JETP Letters, 113:12 (2021), 801–813
Citation in format AMSBIB
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\pages 833--847
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    • This publication is cited in the following 13 articles:
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    		Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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