Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials

Maarten A. Brems; Tobias Sparmann; Simon M. Fröhlich; Leonie C. Dany; Jan Rothörl; Fabian Kammerbauer; Elizabeth M. Jefremovas; Oded Farago; Mathias Kläui; Peter Virnau

doi:10.1103/PhysRevLett.134.046701

Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials

Maarten A. Brems, Tobias Sparmann, Simon M. Fröhlich, Leonie C. Dany, Jan Rothörl, Fabian Kammerbauer, Elizabeth M. Jefremovas, Oded Farago, Mathias Kläui, Peter Virnau

Department of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate fully quantitative Thiele model simulations of magnetic skyrmion dynamics on previously unattainable experimentally relevant large length and time scales by ascertaining the key missing parameters needed to calibrate the experimental and simulation timescales and current-induced forces. Our work allows us to determine complete spatial pinning energy landscapes that enable quantification of experimental studies of diffusion in arbitrary potentials within the Lifson-Jackson framework. Our method enables us to ascertain the timescales, and by isolating the effect of ultralow current density (order 106 A/m2) generated torques we directly infer the total force acting on the skyrmion for a quantitative modeling.

Original language	English
Article number	046701
Journal	Physical Review Letters
Volume	134
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.134.046701
State	Published - 31 Jan 2025

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.134.046701

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abstract = "We demonstrate fully quantitative Thiele model simulations of magnetic skyrmion dynamics on previously unattainable experimentally relevant large length and time scales by ascertaining the key missing parameters needed to calibrate the experimental and simulation timescales and current-induced forces. Our work allows us to determine complete spatial pinning energy landscapes that enable quantification of experimental studies of diffusion in arbitrary potentials within the Lifson-Jackson framework. Our method enables us to ascertain the timescales, and by isolating the effect of ultralow current density (order 106 A/m2) generated torques we directly infer the total force acting on the skyrmion for a quantitative modeling.",

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AU - Brems, Maarten A.

AU - Sparmann, Tobias

AU - Fröhlich, Simon M.

AU - Dany, Leonie C.

AU - Rothörl, Jan

AU - Kammerbauer, Fabian

AU - Jefremovas, Elizabeth M.

AU - Farago, Oded

AU - Kläui, Mathias

AU - Virnau, Peter

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AB - We demonstrate fully quantitative Thiele model simulations of magnetic skyrmion dynamics on previously unattainable experimentally relevant large length and time scales by ascertaining the key missing parameters needed to calibrate the experimental and simulation timescales and current-induced forces. Our work allows us to determine complete spatial pinning energy landscapes that enable quantification of experimental studies of diffusion in arbitrary potentials within the Lifson-Jackson framework. Our method enables us to ascertain the timescales, and by isolating the effect of ultralow current density (order 106 A/m2) generated torques we directly infer the total force acting on the skyrmion for a quantitative modeling.

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Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials

Abstract

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