Zobrazeno 1 - 10 of 12 pro vyhledávání: '"M. N. Potkina"'
2
Stability and Lifetimes of Magnetic States of Nano- and Microstructures (Brief Review)
Autor: Valery M. Uzdin, Igor Lobanov, M. N. Potkina
Publikováno v: JETP Letters. 113:801-813
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
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25c3eeec56e14d64d797665d957a38e9
https://doi.org/10.1134/s0021364021120109
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5
Stability of long-lived antiskyrmions in the Mn-Pt-Sn tetragonal Heusler material
Autor: Oleg A. Tretiakov, Valery M. Uzdin, Hannes Jónsson, Igor Lobanov, M. N. Potkina
Publikováno v: Physical Review B. 102
The lifetime of antiskyrmions at room temperature in an Mn-Pt-Sn tetragonal Heusler material has been calculated using an atomic scale representation including nearly a million spins. The evaluation of the pre-exponential factor in the Arrhenius rate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f20b722c12086919a0d8d74299c4ed7
https://doi.org/10.1103/physrevb.102.134430
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6
Skyrmions in antiferromagnets: thermal stability and the effect of external field and impurities
Autor: Igor Lobanov, Hannes Jónsson, M. N. Potkina, Valery M. Uzdin
Calculations of skyrmions in antiferromagnets (AFMs) are presented, and their properties compared with skyrmions in corresponding ferromagnets (FMs). The rates of skyrmion collapse and escape through the boundary of a track, as well as the binding to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::083c2147cf15b53e3274e08586f62b3d
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7
Toward room-temperature nanoscale skyrmions in ultrathin films
Autor: M. N. Potkina, Stefan Heinze, Pavel F. Bessarab, Stephan von Malottki, Grzegorz Kwiatkowski, Anastasiia S. Varentcova
Publikováno v: npj Computational Materials, Vol 6, Iss 1, Pp 1-11 (2020)
npj Computational Materials, 6(1)
Breaking the dilemma between small size and room-temperature stability is a necessary prerequisite for skyrmion-based information technology. Here we demonstrate by means of rate theory and an atomistic spin Hamiltonian that the stability of isolated
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bde7aceac9a52b455bd3475ed96dc883
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8
Interplay between size and stability of magnetic skyrmions
Autor: A.S. Varentsova, S. von Malottki, Pavel F. Bessarab, Stefan Heinze, M. N. Potkina
Publikováno v: Nanosystems: Physics, Chemistry, Mathematics. :356-363
Publisher's version (útgefin grein)
The relationship between the size and stability of isolated skyrmions in a magnetic monolayer is analyzed based on minimum energy path calculations and atomistic spin Hamiltonian. It is demonstrated that the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01538f87b97760df52e1620e9c833d2e
https://doi.org/10.17586/2220-8054-2018-9-3-356-363
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10
Energy surface and lifetime of magnetic skyrmions
Autor: Valery M. Uzdin, Pavel F. Bessarab, M. N. Potkina, Igor Lobanov, Hannes Jónsson
Publikováno v: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 459:236-240
The stability of skyrmions in various environments is estimated by analyzing the multidimensional surface describing the energy of the system as a function of the directions of the magnetic moments in the system. The energy is given by a Heisenberg-l
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8a9d780eeab5c187e48ebc7ffa77e50
http://juuli.fi/Record/0283473417
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