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Title: High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice

Spin-torque ferromagnetic resonance arises in heavy metal-ferromagnet heterostructures when an alternating charge current is passed through the bilayer stack. The methodology to detect the resonance is based on the anisotropic magnetoresistance, which is the change in the electrical resistance due to different orientations of the magnetization. In connected networks of ferromagnetic nanowires, known as artificial spin ice, the magnetoresistance is rather complex owing to the underlying collective behavior of the geometrically frustrated magnetic domain structure. Here, we demonstrate spin-torque ferromagnetic resonance investigations in a square artificial spin-ice system and correlate our observations to magneto-transport measurements. The experimental findings are described using a simulation approach that highlights the importance of the correlated dynamics response of the magnetic system. Here, our results open the possibility of designing reconfigurable microwave oscillators and magnetoresistive devices based on connected networks of nanomagnets.
Authors:
 [1] ;  [2] ;  [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  3. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States); Yale Univ., New Haven, CT (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; SC0010778
Type:
Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 8; Journal Issue: 6; Journal ID: ISSN 2331-7019
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1417023
Alternate Identifier(s):
OSTI ID: 1414874

Jungfleisch, Matthias B., Sklenar, Joseph, Ding, Junjia, Park, Jungsik, Pearson, John E., Novosad, Valentine, Schiffer, Peter, and Hoffmann, Axel. High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice. United States: N. p., Web. doi:10.1103/PhysRevApplied.8.064026.
Jungfleisch, Matthias B., Sklenar, Joseph, Ding, Junjia, Park, Jungsik, Pearson, John E., Novosad, Valentine, Schiffer, Peter, & Hoffmann, Axel. High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice. United States. doi:10.1103/PhysRevApplied.8.064026.
Jungfleisch, Matthias B., Sklenar, Joseph, Ding, Junjia, Park, Jungsik, Pearson, John E., Novosad, Valentine, Schiffer, Peter, and Hoffmann, Axel. 2017. "High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice". United States. doi:10.1103/PhysRevApplied.8.064026.
@article{osti_1417023,
title = {High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice},
author = {Jungfleisch, Matthias B. and Sklenar, Joseph and Ding, Junjia and Park, Jungsik and Pearson, John E. and Novosad, Valentine and Schiffer, Peter and Hoffmann, Axel},
abstractNote = {Spin-torque ferromagnetic resonance arises in heavy metal-ferromagnet heterostructures when an alternating charge current is passed through the bilayer stack. The methodology to detect the resonance is based on the anisotropic magnetoresistance, which is the change in the electrical resistance due to different orientations of the magnetization. In connected networks of ferromagnetic nanowires, known as artificial spin ice, the magnetoresistance is rather complex owing to the underlying collective behavior of the geometrically frustrated magnetic domain structure. Here, we demonstrate spin-torque ferromagnetic resonance investigations in a square artificial spin-ice system and correlate our observations to magneto-transport measurements. The experimental findings are described using a simulation approach that highlights the importance of the correlated dynamics response of the magnetic system. Here, our results open the possibility of designing reconfigurable microwave oscillators and magnetoresistive devices based on connected networks of nanomagnets.},
doi = {10.1103/PhysRevApplied.8.064026},
journal = {Physical Review Applied},
number = 6,
volume = 8,
place = {United States},
year = {2017},
month = {12}
}