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Dynamic response of...
Dynamic response of an artificial square spin ice
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- Jungfleisch, M. B. (author)
- Argonne National Laboratory
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- Zhang, W. (author)
- Argonne National Laboratory
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- Iacocca, Ezio, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,University of Colorado at Boulder
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- Sklenar, J. (author)
- Argonne National Laboratory
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- Ding, J. (author)
- Argonne National Laboratory
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- Jiang, W. (author)
- Argonne National Laboratory
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- Zhang, S. (author)
- Argonne National Laboratory
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- Pearson, J. E. (author)
- Argonne National Laboratory
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- Novosad, V. (author)
- Argonne National Laboratory
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- Ketterson, J. B. (author)
- Northwestern University
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- Heinonen, O. (author)
- Argonne National Laboratory,Northwestern University
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- Hoffmann, A. (author)
- Argonne National Laboratory
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(creator_code:org_t)
- 2016
- 2016
- English.
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In: Physical Review B. - 2469-9969 .- 2469-9950. ; 93:10
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Abstract
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- Magnetization dynamics in an artificial square spin-ice lattice made of Ni80Fe20 with magnetic field applied in the lattice plane is investigated by broadband ferromagnetic resonance spectroscopy. The experimentally observed dispersion shows a rich spectrum of modes corresponding to different magnetization states. These magnetization states are determined by exchange and dipolar interaction between individual islands, as is confirmed by a semianalytical model. In the low field regime below 400 Oe a hysteretic behavior in the mode spectrum is found. Micromagnetic simulations reveal that the origin of the observed spectra is due to the initialization of different magnetization states of individual nanomagnets. Our results indicate that it might be possible to determine the spin-ice state by resonance experiments and are a first step towards the understanding of artificial geometrically frustrated magnetic systems in the high-frequency regime.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Jungfleisch, M. ...
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Zhang, W.
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Iacocca, Ezio, 1 ...
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Sklenar, J.
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Ding, J.
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Jiang, W.
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show more...
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Zhang, S.
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Pearson, J. E.
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Novosad, V.
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Ketterson, J. B.
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Heinonen, O.
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Hoffmann, A.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Physical Review ...
- By the university
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Chalmers University of Technology