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Title: Magnetic skyrmion bubble motion driven by surface acoustic waves

Abstract

Here, we study the dynamical control of a magnetic skyrmion bubble by using counter-propagating surface acoustic waves (SAWs) in a ferromagnet. First, we determine the bubble mass and derive the force due to SAWs acting on a magnetic bubble using Thiele’s method. The force that pushes the bubble is proportional to the strain gradient for the major strain component. We then study the dynamical pinning and motion of magnetic bubbles by SAWs in a nanowire. In a disk geometry, we propose a SAWs-driven skyrmion bubble oscillator with two resonant frequencies.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1426481
Alternate Identifier(s):
OSTI ID: 1426345
Grant/Contract Number:  
SC0014189
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 11; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Nepal, Rabindra, Güngördü, Utkan, and Kovalev, Alexey A. Magnetic skyrmion bubble motion driven by surface acoustic waves. United States: N. p., 2018. Web. doi:10.1063/1.5013620.
Nepal, Rabindra, Güngördü, Utkan, & Kovalev, Alexey A. Magnetic skyrmion bubble motion driven by surface acoustic waves. United States. doi:10.1063/1.5013620.
Nepal, Rabindra, Güngördü, Utkan, and Kovalev, Alexey A. Mon . "Magnetic skyrmion bubble motion driven by surface acoustic waves". United States. doi:10.1063/1.5013620. https://www.osti.gov/servlets/purl/1426481.
@article{osti_1426481,
title = {Magnetic skyrmion bubble motion driven by surface acoustic waves},
author = {Nepal, Rabindra and Güngördü, Utkan and Kovalev, Alexey A.},
abstractNote = {Here, we study the dynamical control of a magnetic skyrmion bubble by using counter-propagating surface acoustic waves (SAWs) in a ferromagnet. First, we determine the bubble mass and derive the force due to SAWs acting on a magnetic bubble using Thiele’s method. The force that pushes the bubble is proportional to the strain gradient for the major strain component. We then study the dynamical pinning and motion of magnetic bubbles by SAWs in a nanowire. In a disk geometry, we propose a SAWs-driven skyrmion bubble oscillator with two resonant frequencies.},
doi = {10.1063/1.5013620},
journal = {Applied Physics Letters},
number = 11,
volume = 112,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 6 works
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Figures / Tables:

FIG. 1 FIG. 1: Schematics of system setup: Counter-propagating SAWs applied through IDTs create surface displacements on the ferromagnetic layer that translate into strain components.

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