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Title: Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation

Abstract

A non-standing characteristic of directly imaged spin-waves in confined micrometer-sized ultrathin Permalloy (Ni80Fe20) structures is reported along with evidence of the possibility to alter the observed state by modifications to the sample geometry. Using micromagnetic simulations, the presence of the spin-wave modes excited in the Permalloy stripes along with the quasi-uniform modes was observed. The predicted spin-waves were imaged in direct space using time resolved scanning transmission x-ray microscopy, combined with a ferromagnetic resonance excitation scheme (STXM-FMR). STXM-FMR measurements revealed a non-standing characteristic of the spin-waves. Also, it was shown by micromagnetic simulations and confirmed using STXM-FMR results that the observed characteristic of the spin-waves can be influenced by the local magnetic fields in different sample geometries.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [2];  [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [5]; ORCiD logo [1]; ORCiD logo [2]
  1. Johannes Kepler Univ. Linz (Austria)
  2. Univ. of Duisburg-Essen (Germany)
  3. Univ. of Duisburg-Essen (Germany); Forschungszentrum Juelich (Germany)
  4. Univ. of Duisburg-Essen (Germany); Federal Research Center, Krasnoyarsk (Russia). Kirensky Institute of Physics
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Univ. of California, Santa Cruz, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Austrian Science Foundation (FWF); German Research Foundation (DFG); Government of the Russian Federation
OSTI Identifier:
1608833
Alternate Identifier(s):
OSTI ID: 1775368
Grant/Contract Number:  
AC02-76SF00515; 075-15-2019-1886; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 7; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Pile, S., Feggeler, T., Schaffers, T., Meckenstock, R., Buchner, M., Spoddig, D., Zingsem, B., Ney, V., Farle, M., Wende, H., Ohldag, H., Ney, A., and Ollefs, K. Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation. United States: N. p., 2020. Web. doi:10.1063/1.5139881.
Pile, S., Feggeler, T., Schaffers, T., Meckenstock, R., Buchner, M., Spoddig, D., Zingsem, B., Ney, V., Farle, M., Wende, H., Ohldag, H., Ney, A., & Ollefs, K. Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation. United States. doi:https://doi.org/10.1063/1.5139881
Pile, S., Feggeler, T., Schaffers, T., Meckenstock, R., Buchner, M., Spoddig, D., Zingsem, B., Ney, V., Farle, M., Wende, H., Ohldag, H., Ney, A., and Ollefs, K. Tue . "Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation". United States. doi:https://doi.org/10.1063/1.5139881. https://www.osti.gov/servlets/purl/1608833.
@article{osti_1608833,
title = {Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation},
author = {Pile, S. and Feggeler, T. and Schaffers, T. and Meckenstock, R. and Buchner, M. and Spoddig, D. and Zingsem, B. and Ney, V. and Farle, M. and Wende, H. and Ohldag, H. and Ney, A. and Ollefs, K.},
abstractNote = {A non-standing characteristic of directly imaged spin-waves in confined micrometer-sized ultrathin Permalloy (Ni80Fe20) structures is reported along with evidence of the possibility to alter the observed state by modifications to the sample geometry. Using micromagnetic simulations, the presence of the spin-wave modes excited in the Permalloy stripes along with the quasi-uniform modes was observed. The predicted spin-waves were imaged in direct space using time resolved scanning transmission x-ray microscopy, combined with a ferromagnetic resonance excitation scheme (STXM-FMR). STXM-FMR measurements revealed a non-standing characteristic of the spin-waves. Also, it was shown by micromagnetic simulations and confirmed using STXM-FMR results that the observed characteristic of the spin-waves can be influenced by the local magnetic fields in different sample geometries.},
doi = {10.1063/1.5139881},
journal = {Applied Physics Letters},
number = 7,
volume = 116,
place = {United States},
year = {2020},
month = {2}
}

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