Psaroudaki, Christina and Loss, Daniel. (2018) Skyrmions Driven by Intrinsic Magnons. Physical Review Letters, 120 (23). p. 237203.
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Official URL: https://edoc.unibas.ch/69215/
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Abstract
We study the dynamics of a Skyrmion in a magnetic insulating nanowire in the presence of time-dependent oscillating magnetic field gradients. These ac fields act as a net driving force on the Skyrmion via its own intrinsic magnetic excitations. In a microscopic quantum field theory approach, we include the unavoidable coupling of the external field to the magnons, which gives rise to time-dependent dissipation for the Skyrmion. We demonstrate that the magnetic ac field induces a super-Ohmic to Ohmic crossover behavior for the Skyrmion dissipation kernels with time-dependent Ohmic terms. The ac driving of the magnon bath at resonance results in a unidirectional helical propagation of the Skyrmion in addition to the otherwise periodic bounded motion.
Faculties and Departments: | 05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss) |
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UniBasel Contributors: | Loss, Daniel |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
e-ISSN: | 1079-7114 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Related URLs: | |
Identification Number: |
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Last Modified: | 06 Apr 2022 13:16 |
Deposited On: | 08 Oct 2019 09:15 |
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