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Title: Dynamic response of an artificial square spin ice

Journal Article · · Physical Review, B: Condensed Matter
 [1];  [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [4];  [3];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Colorado, Boulder, CO (United States); Chalmers Univ. of Technology, Gothenburg (Sweden)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
  4. Northwestern Univ., Evanston, IL (United States)

Magnetization dynamics in an artficial 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.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1339267
Alternate ID(s):
OSTI ID: 1240043
Journal Information:
Physical Review, B: Condensed Matter, Vol. 93, Issue 10; ISSN 0163-1829
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 62 works
Citation information provided by
Web of Science

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Cited By (22)

Tunable magnetization dynamics in artificial spin ice via shape anisotropy modification journal August 2019
Thickness dependence of spin wave dynamics in three-fold nano-ellipse clusters journal October 2018
Ferromagnetic resonance spectra of permalloy nano-ellipses as building blocks for complex magnonic lattices journal November 2019
Deliberate exotic magnetism via frustration and topology journal March 2017
Heisenberg pseudo-exchange and emergent anisotropies in field-driven pinwheel artificial spin ice journal November 2019
Reconfigurable wave band structure of an artificial square ice journal April 2016
Thermally induced magnetic relaxation in square artificial spin ice journal November 2016
Dipolar Cairo lattice: Geometrical frustration and short-range correlations journal October 2019
Tuning magnetic ordering in a dipolar square-kite tessellation journal February 2018
Topologically Nontrivial Magnon Bands in Artificial Square Spin Ices with Dzyaloshinskii-Moriya Interaction journal September 2017
Angular-dependent spin dynamics of a triad of permalloy macrospins journal January 2019
Emergent dynamic chirality in a thermally driven artificial spin ratchet journal October 2017
Spin-wave dynamics in artificial anti-spin-ice systems: Experimental and theoretical investigations journal August 2018
Field-induced phase coexistence in an artificial spin ice journal December 2018
Magnetization dynamics in artificial spin ice journal October 2019
Thermally induced magnetic relaxation in square artificial spin ice text January 2016
High frequency dynamics modulated by collective magnetization reversal in artificial spin ice text January 2017
Angular Dependent Magnetization Dynamics with Mirror-symmetric Excitations in Artificial Quasicrystalline Nanomagnet Lattices text January 2018
Sculpting the Spin-Wave Response of Artificial Spin Ice via Microstate Selection text January 2018
Spin wave dynamics in artificial anti spin-ice systems: experimental and theoretical investigations text January 2018
Collective magnetization dynamics in nano-arrays of thin FePd discs text January 2019
Heisenberg pseudo-exchange and emergent anisotropies in field-driven pinwheel artificial spin ice text January 2019

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