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Title: Quantized spin waves in single Co/Pt dots detected by anomalous Hall effect based ferromagnetic resonance

Abstract

Anomalous Hall effect (AHE) based ferromagnetic resonance (FMR) measurements were carried out on perpendicularly magnetized Co/Pt multilayer single dots of 0.4–3 μm in diameter. The resonance behavior was measured by detecting the decrease of perpendicular magnetization component due to magnetization precession. Resonance behavior was observed as a clear decrease of Hall voltages, and the obtained resonance fields were consistent with the results of vector-network-analyzer FMR. Spin-waves with cylindrical symmetry became significant by decreasing the dot diameter, and quantized multiple resonances were observed in the dot of 0.4 μm in diameter. The AHE based FMR proposed here is a powerful method to approach magnetization dynamics including spin waves and non-linear behavior excited in a finite nanostructure.

Authors:
; ;  [1];  [2]
  1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)
  2. Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578 (Japan)
Publication Date:
OSTI Identifier:
22395536
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COBALT; ELECTRIC POTENTIAL; FERROMAGNETIC RESONANCE; HALL EFFECT; INTERFACES; LAYERS; MAGNETIZATION; NANOSTRUCTURES; NONLINEAR PROBLEMS; PLATINUM; PRECESSION; SPIN WAVES; SYMMETRY

Citation Formats

Kikuchi, N., E-mail: kikuchin@tagen.tohoku.ac.jp, Furuta, M., Okamoto, S., Kitakami, O., Shimatsu, T., and Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577. Quantized spin waves in single Co/Pt dots detected by anomalous Hall effect based ferromagnetic resonance. United States: N. p., 2014. Web. doi:10.1063/1.4904225.
Kikuchi, N., E-mail: kikuchin@tagen.tohoku.ac.jp, Furuta, M., Okamoto, S., Kitakami, O., Shimatsu, T., & Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577. Quantized spin waves in single Co/Pt dots detected by anomalous Hall effect based ferromagnetic resonance. United States. https://doi.org/10.1063/1.4904225
Kikuchi, N., E-mail: kikuchin@tagen.tohoku.ac.jp, Furuta, M., Okamoto, S., Kitakami, O., Shimatsu, T., and Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577. 2014. "Quantized spin waves in single Co/Pt dots detected by anomalous Hall effect based ferromagnetic resonance". United States. https://doi.org/10.1063/1.4904225.
@article{osti_22395536,
title = {Quantized spin waves in single Co/Pt dots detected by anomalous Hall effect based ferromagnetic resonance},
author = {Kikuchi, N., E-mail: kikuchin@tagen.tohoku.ac.jp and Furuta, M. and Okamoto, S. and Kitakami, O. and Shimatsu, T. and Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577},
abstractNote = {Anomalous Hall effect (AHE) based ferromagnetic resonance (FMR) measurements were carried out on perpendicularly magnetized Co/Pt multilayer single dots of 0.4–3 μm in diameter. The resonance behavior was measured by detecting the decrease of perpendicular magnetization component due to magnetization precession. Resonance behavior was observed as a clear decrease of Hall voltages, and the obtained resonance fields were consistent with the results of vector-network-analyzer FMR. Spin-waves with cylindrical symmetry became significant by decreasing the dot diameter, and quantized multiple resonances were observed in the dot of 0.4 μm in diameter. The AHE based FMR proposed here is a powerful method to approach magnetization dynamics including spin waves and non-linear behavior excited in a finite nanostructure.},
doi = {10.1063/1.4904225},
url = {https://www.osti.gov/biblio/22395536}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 24,
volume = 105,
place = {United States},
year = {Mon Dec 15 00:00:00 EST 2014},
month = {Mon Dec 15 00:00:00 EST 2014}
}