Magnetic charge propagation upon a 3D artificial spin-ice

May, A.; Saccone, M.; van den Berg, A.; Askey, J.; Hunt, M.; Ladak, S.

doi:10.1038/s41467-021-23480-7

Title: Magnetic charge propagation upon a 3D artificial spin-ice

Abstract

Magnetic charge propagation in spin-ice materials has yielded a paradigm-shift in science, allowing the symmetry between electricity and magnetism to be studied. Recent work is now suggesting the spin-ice surface may be important in mediating the ordering and associated phase space in such materials. Here, we detail a 3D artificial spin-ice, which captures the exact geometry of bulk systems, allowing magnetic charge dynamics to be directly visualized upon the surface. Using magnetic force microscopy, we observe vastly different magnetic charge dynamics along two principal directions. For a field applied along the surface termination, local energetics force magnetic charges to nucleate over a larger characteristic distance, reducing their magnetic Coulomb interaction and producing uncorrelated monopoles. In contrast, applying a field transverse to the surface termination yields highly correlated monopole-antimonopole pairs. Detailed simulations suggest it is the difference in effective chemical potential as well as the energy landscape experienced during dynamics that yields the striking differences in monopole transport.

Authors:

May, A. ^[1]; Saccone, M. ^[2];

^[1];

^[1]; Hunt, M. ^[1];

^[1]

Cardiff Univ. (United Kingdom)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Nonlinear Studies (CNLS)

Publication Date:: Fri May 28 00:00:00 EDT 2021

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE; Engineering and Physical Sciences Research Council (EPSRC)

OSTI Identifier:: 1822810

Report Number(s):: LA-UR-21-22700
Journal ID: ISSN 2041-1723; TRN: US2214513

Grant/Contract Number:: 89233218CNA000001; EP/R009147/1/

Resource Type:: Accepted Manuscript

Journal Name:: Nature Communications

Additional Journal Information:: Journal Volume: 12; Journal Issue: 1; Journal ID: ISSN 2041-1723

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ferromagnetism; magnetic properties and materials

Citation Formats


                    May, A., Saccone, M., van den Berg, A., Askey, J., Hunt, M., and Ladak, S. Magnetic charge propagation upon a 3D artificial spin-ice.  United States: N. p., 2021. 
Web.  doi:10.1038/s41467-021-23480-7.

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                    May, A., Saccone, M., van den Berg, A., Askey, J., Hunt, M., & Ladak, S. Magnetic charge propagation upon a 3D artificial spin-ice.  United States.  https://doi.org/10.1038/s41467-021-23480-7

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                    May, A., Saccone, M., van den Berg, A., Askey, J., Hunt, M., and Ladak, S. Fri .  
"Magnetic charge propagation upon a 3D artificial spin-ice".  United States.  https://doi.org/10.1038/s41467-021-23480-7.  https://www.osti.gov/servlets/purl/1822810.

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@article{osti_1822810,

  title        = {Magnetic charge propagation upon a 3D artificial spin-ice},

  author       = {May, A. and Saccone, M. and van den Berg, A. and Askey, J. and Hunt, M. and Ladak, S.},

  abstractNote = {Magnetic charge propagation in spin-ice materials has yielded a paradigm-shift in science, allowing the symmetry between electricity and magnetism to be studied. Recent work is now suggesting the spin-ice surface may be important in mediating the ordering and associated phase space in such materials. Here, we detail a 3D artificial spin-ice, which captures the exact geometry of bulk systems, allowing magnetic charge dynamics to be directly visualized upon the surface. Using magnetic force microscopy, we observe vastly different magnetic charge dynamics along two principal directions. For a field applied along the surface termination, local energetics force magnetic charges to nucleate over a larger characteristic distance, reducing their magnetic Coulomb interaction and producing uncorrelated monopoles. In contrast, applying a field transverse to the surface termination yields highly correlated monopole-antimonopole pairs. Detailed simulations suggest it is the difference in effective chemical potential as well as the energy landscape experienced during dynamics that yields the striking differences in monopole transport.},

  doi          = {10.1038/s41467-021-23480-7},

  journal      = {Nature Communications},

  number       = 1,

  volume       = 12,

  place        = {United States},

  year         = {Fri May 28 00:00:00 EDT 2021},

  month        = {Fri May 28 00:00:00 EDT 2021}

}

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