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Title: Direct observation and imaging of a spin-wave soliton with p-like symmetry

Abstract

Spin waves, the collective excitations of spins, can emerge as nonlinear solitons at the nanoscale when excited by an electrical current from a nanocontact. These solitons are expected to have essentially cylindrical symmetry (that is, s-like), but no direct experimental observation exists to confirm this picture. Using a high-sensitivity time-resolved magnetic X-ray microscopy with 50 ps temporal resolution and 35 nm spatial resolution, we are able to create a real-space spin-wave movie and observe the emergence of a localized soliton with a nodal line, that is, with p-like symmetry. Moreover, micromagnetic simulations explain the measurements and reveal that the symmetry of the soliton can be controlled by magnetic fields. Our results broaden the understanding of spin-wave dynamics at the nanoscale, with implications for the design of magnetic nanodevices.

Authors:
ORCiD logo [1];  [2];  [1];  [3];  [3];  [4];  [5];  [2];  [6]; ORCiD logo [4];  [7];  [5];  [2];  [2];  [2]
+ Show Author Affiliations
  1. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of Barcelona (Spain)
  4. KTH Royal Inst. of Technology, Stockholm (Sweden)
  5. New York Univ. (NYU), NY (United States)
  6. HGST Inc., San Jose, CA (United States)
  7. Emory Univ., Atlanta, GA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1237588
Report Number(s):
SLAC-PUB-16394
Journal ID: ISSN 2041-1723; ncomms9889
Grant/Contract Number:  
AC03-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; physical sciences; condensed matter

Citation Formats

Bonetti, S., Kukreja, R., Chen, Z., Macià, F., Hernàndez, J. M., Eklund, A., Backes, D., Frisch, J., Katine, J., Malm, G., Urazhdin, S., Kent, A. D., Stöhr, J., Ohldag, H., and Dürr, H. A. Direct observation and imaging of a spin-wave soliton with p-like symmetry. United States: N. p., 2015. Web. doi:10.1038/ncomms9889.
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Bonetti, S., Kukreja, R., Chen, Z., Macià, F., Hernàndez, J. M., Eklund, A., Backes, D., Frisch, J., Katine, J., Malm, G., Urazhdin, S., Kent, A. D., Stöhr, J., Ohldag, H., & Dürr, H. A. Direct observation and imaging of a spin-wave soliton with p-like symmetry. United States. https://doi.org/10.1038/ncomms9889
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Bonetti, S., Kukreja, R., Chen, Z., Macià, F., Hernàndez, J. M., Eklund, A., Backes, D., Frisch, J., Katine, J., Malm, G., Urazhdin, S., Kent, A. D., Stöhr, J., Ohldag, H., and Dürr, H. A. Mon . "Direct observation and imaging of a spin-wave soliton with p-like symmetry". United States. https://doi.org/10.1038/ncomms9889. https://www.osti.gov/servlets/purl/1237588.
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@article{osti_1237588,
title = {Direct observation and imaging of a spin-wave soliton with p-like symmetry},
author = {Bonetti, S. and Kukreja, R. and Chen, Z. and Macià, F. and Hernàndez, J. M. and Eklund, A. and Backes, D. and Frisch, J. and Katine, J. and Malm, G. and Urazhdin, S. and Kent, A. D. and Stöhr, J. and Ohldag, H. and Dürr, H. A.},
abstractNote = {Spin waves, the collective excitations of spins, can emerge as nonlinear solitons at the nanoscale when excited by an electrical current from a nanocontact. These solitons are expected to have essentially cylindrical symmetry (that is, s-like), but no direct experimental observation exists to confirm this picture. Using a high-sensitivity time-resolved magnetic X-ray microscopy with 50 ps temporal resolution and 35 nm spatial resolution, we are able to create a real-space spin-wave movie and observe the emergence of a localized soliton with a nodal line, that is, with p-like symmetry. Moreover, micromagnetic simulations explain the measurements and reveal that the symmetry of the soliton can be controlled by magnetic fields. Our results broaden the understanding of spin-wave dynamics at the nanoscale, with implications for the design of magnetic nanodevices.},
doi = {10.1038/ncomms9889},
journal = {Nature Communications},
number = ,
volume = 6,
place = {United States},
year = {Mon Nov 16 00:00:00 EST 2015},
month = {Mon Nov 16 00:00:00 EST 2015}
}
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https://doi.org/10.1038/ncomms9889
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    Works referencing / citing this record:

    Excitation and Amplification of Spin Waves by Spin-Orbit Torque
    journal, July 2018

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    Optically Inspired Nanomagnonics with Nonreciprocal Spin Waves in Synthetic Antiferromagnets
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    • Advanced Materials, Vol. 32, Issue 9
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    Emission and propagation of 1D and 2D spin waves with nanoscale wavelengths in anisotropic spin textures
    journal, February 2019

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    Investigation of magnetic droplet solitons using x-ray holography with extended references
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    Fast micromagnetic simulations on GPU—recent advances made with $\mathsf{mumax}^3$
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    Designing magnetic droplet soliton nucleation employing spin polarizer
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    • Statuto, Nahuel; Hernàndez, Joan Manel; Kent, Andrew D.
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    Dimensional crossover in spin Hall oscillators
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