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  Unidirectional Pumping of Phonons by Magnetization Dynamics

Zhang, X., Bauer, G. E., & Yu, T. (2020). Unidirectional Pumping of Phonons by Magnetization Dynamics. Physical Review Letters, 125(7): 077203. doi:10.1103/PhysRevLett.125.077203.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-ED1A-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-1CE9-4
Genre: Journal Article

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PhysRevLett.125.077203.pdf (Publisher version), 640KB
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PhysRevLett.125.077203.pdf
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Open Access. - Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
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 Creators:
Zhang, X.1, Author
Bauer, G. E. W.1, 2, Author
Yu, T.1, 3, Author              
Affiliations:
1Kavli Institute of NanoScience, Delft University of Technology, ou_persistent22              
2WPI-AIMR & Institute for Materials Research & CSRN, Tohoku University, ou_persistent22              
3Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              

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 Abstract: We propose a method to control surface phonon transport by weak magnetic fields based on the pumping of surface acoustic waves (SAWs) by magnetostriction. We predict that the magnetization dynamics of a nanowire on top of a dielectric films injects SAWs with opposite angular momenta into opposite directions. Two parallel nanowires form a phononic cavity that at magnetic resonances pump a unidirectional SAW current into half of the substrate.

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Language(s): eng - English
 Dates: 2020-07-232020-03-052020-07-242020-08-142020-08-14
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.125.077203
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 125 (7) Sequence Number: 077203 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1