Skyrmion‐Excited Spin‐Wave Fractal Networks
Skyrmion‐Excited Spin‐Wave Fractal Networks
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斯格明子——激发自旋——波分形网络
DOI:
10.1002/adma.202300416
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发表时间:
2023
影响因子:
29.4
通讯作者:
Fullerton, Eric E.
中科院分区:
文献类型:
--
作者:
Tang, Nan;Liyanage, W. L. N. C.;Montoya, Sergio A.;Patel, Sheena;Quigley, Lizabeth J.;Grutter, Alexander J.;Fitzsimmons, Michael R.;Sinha, Sunil;Borchers, Julie A.;Fullerton, Eric E.
Magnetic skyrmions exhibit unique, technologically relevant pseudo‐particle behaviors which arise from their topological protection, including well‐defined, 3D dynamic modes that occur at microwave frequencies. During dynamic excitation, spin waves are ejected into the interstitial regions between skyrmions, creating the magnetic equivalent of a turbulent sea. However, since the spin waves in these systems have a well‐defined length scale, and the skyrmions are on an ordered lattice, ordered structures from spin‐wave interference can precipitate from the chaos. This work uses small‐angle neutron scattering (SANS) to capture the dynamics in hybrid skyrmions and investigate the spin‐wave structure. Performing simultaneous ferromagnetic resonance and SANS, the diffraction pattern shows a large increase in low‐angle scattering intensity, which is present only in the resonance condition. This scattering pattern is best fit using a mass fractal model, which suggests the spin waves form a long‐range fractal network. The fractal structure is constructed of fundamental units with a size that encodes the spin‐wave emissions and are constrained by the skyrmion lattice. These results offer critical insights into the nanoscale dynamics of skyrmions, identify a new dynamic spin‐wave fractal structure, and demonstrate SANS as a unique tool to probe high‐speed dynamics.
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影响因子:
3.7
作者:
Tobias Weber;J. Waizner;Paul Steffens;A. Bauer;C. Pfleiderer;M. Garst;Peter Boni
通讯作者:
Peter Boni
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
A. D. Moral
通讯作者:
A. D. Moral
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
Y. Avishai;K. Totsuka;and N. Nagaosa;小林正佳;福島竜輝;村上修一;H. Katsuragi;可香谷隆;S. Seki
通讯作者:
S. Seki
影响因子:
3.7
作者:
S. Grigoriev;K. A. Pschenichnyi;E. Altynbaev;S.;A. Heinemann;D. Honnecker;D. Menzel
通讯作者:
D. Menzel
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
C. Pappas;E. Lelièvre;P. Bentley;P. Falus;P. Fouquet;B. Farago
通讯作者:
B. Farago