Experimental realization of linearly polarized x-ray detected ferromagnetic resonance

Klewe, C.; Emori, S.; Li, Q.; Yang, M.; Gray, B. A.; Jeon, H-M; Howe, B. M.; Suzuki, Y.; Qiu, Z. Q.; Shafer, P.; Arenholz, E.

doi:10.1088/1367-2630/ac465f

Title: Experimental realization of linearly polarized x-ray detected ferromagnetic resonance

Abstract

We present the first theoretical and experimental evidence of time-resolved dynamic x-ray magnetic linear dichroism (XMLD) measurements of GHz magnetic precessions driven by ferromagnetic resonance in both metallic and insulating thin films. Our findings show a dynamic XMLD in both ferromagnetic Ni₈₀Fe₂₀ and ferrimagnetic Ni_0.65Zn_0.35Al_0.8Fe_1.2O₄ for different measurement geometries and linear polarizations. A detailed analysis of the observed signals reveals the importance of separating different harmonic components in the dynamic signal in order to identify the XMLD response without the influence of competing contributions. In particular, RF magnetic resonance elicits a large dynamic XMLD response at the fundamental frequency under experimental geometries with oblique x-ray polarization. The geometric range and experimental sensitivity can be improved by isolating the 2ω Fourier component of the dynamic response. These results illustrate the potential of dynamic XMLD and represent a milestone accomplishment toward the study of GHz spin dynamics in systems beyond ferromagnetic order.

Authors:

^[1]; Emori, S. ^[2]; Li, Q. ^[3]; Yang, M. ^[4]; Gray, B. A. ^[5]; Jeon, H-M ^[5]; Howe, B. M. ^[5]; Suzuki, Y. ^[6]; Qiu, Z. Q. ^[7];

^[1]; Arenholz, E. ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Univ. of Science and Technology of China, Hefei (China)
Anhui Univ. (China)
Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)
Stanford Univ., CA (United States)
Univ. of California, Berkeley, CA (United States)

Publication Date:: Wed Jan 19 00:00:00 EST 2022

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); US Department of the Navy, Office of Naval Research (ONR); National Science Foundation (NSF)

OSTI Identifier:: 1845306

Grant/Contract Number:: AC02-05CH11231; N00014-15-1-0045; DMR-2003914; SC0008505

Resource Type:: Accepted Manuscript

Journal Name:: New Journal of Physics

Additional Journal Information:: Journal Volume: 24; Journal Issue: 1; Journal ID: ISSN 1367-2630

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; XMCD; XMLD; XFMR; antiferromagnetic; FMR; dynamic XMLD

Citation Formats


                    Klewe, C., Emori, S., Li, Q., Yang, M., Gray, B. A., Jeon, H-M, Howe, B. M., Suzuki, Y., Qiu, Z. Q., Shafer, P., and Arenholz, E. Experimental realization of linearly polarized x-ray detected ferromagnetic resonance.  United States: N. p., 2022. 
Web.  doi:10.1088/1367-2630/ac465f.

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                    Klewe, C., Emori, S., Li, Q., Yang, M., Gray, B. A., Jeon, H-M, Howe, B. M., Suzuki, Y., Qiu, Z. Q., Shafer, P., & Arenholz, E. Experimental realization of linearly polarized x-ray detected ferromagnetic resonance.  United States.  https://doi.org/10.1088/1367-2630/ac465f

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                    Klewe, C., Emori, S., Li, Q., Yang, M., Gray, B. A., Jeon, H-M, Howe, B. M., Suzuki, Y., Qiu, Z. Q., Shafer, P., and Arenholz, E. Wed .  
"Experimental realization of linearly polarized x-ray detected ferromagnetic resonance".  United States.  https://doi.org/10.1088/1367-2630/ac465f.  https://www.osti.gov/servlets/purl/1845306.

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@article{osti_1845306,

  title        = {Experimental realization of linearly polarized x-ray detected ferromagnetic resonance},

  author       = {Klewe, C. and Emori, S. and Li, Q. and Yang, M. and Gray, B. A. and Jeon, H-M and Howe, B. M. and Suzuki, Y. and Qiu, Z. Q. and Shafer, P. and Arenholz, E.},

  abstractNote = {We present the first theoretical and experimental evidence of time-resolved dynamic x-ray magnetic linear dichroism (XMLD) measurements of GHz magnetic precessions driven by ferromagnetic resonance in both metallic and insulating thin films. Our findings show a dynamic XMLD in both ferromagnetic Ni80Fe20 and ferrimagnetic Ni0.65Zn0.35Al0.8Fe1.2O4 for different measurement geometries and linear polarizations. A detailed analysis of the observed signals reveals the importance of separating different harmonic components in the dynamic signal in order to identify the XMLD response without the influence of competing contributions. In particular, RF magnetic resonance elicits a large dynamic XMLD response at the fundamental frequency under experimental geometries with oblique x-ray polarization. The geometric range and experimental sensitivity can be improved by isolating the 2ω Fourier component of the dynamic response. These results illustrate the potential of dynamic XMLD and represent a milestone accomplishment toward the study of GHz spin dynamics in systems beyond ferromagnetic order.},

  doi          = {10.1088/1367-2630/ac465f},

  journal      = {New Journal of Physics},

  number       = 1,

  volume       = 24,

  place        = {United States},

  year         = {Wed Jan 19 00:00:00 EST 2022},

  month        = {Wed Jan 19 00:00:00 EST 2022}

}

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Title: Experimental realization of linearly polarized x-ray detected ferromagnetic resonance

Abstract

Citation Formats

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