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Title: Dynamic control of metastable remanent states in mesoscale magnetic elements

Abstract

The formation of the vortex-antivortex-vortex (v-av-v) metastable remanent states in elongated magnetic elements have been systematically investigated using micromagnetic modeling. It is demonstrated that the v-av-v magnetization pattern can be effectively stabilized by exciting the single vortex state with an external RF field. Furthermore, we show that a set of different polarity combinations of the vortex cores can be achieved by adjusting the frequency and amplitude of the excitation field. The corresponding dynamic response in time- and frequency-domain has also been presented. Owing to the diversity of the collective modes with different vortex-antivortex combinations, this system may open promising perspectives in the area of spin transfer torque oscillators.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Russian Federation - Ministry of Education and Science; USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1356369
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English

Citation Formats

Ding, J., Jain, S., Pearson, J. E., Lendinez, S., Khovaylo, V., and Novosad, V. Dynamic control of metastable remanent states in mesoscale magnetic elements. United States: N. p., 2015. Web. doi:10.1063/1.4906959.
Ding, J., Jain, S., Pearson, J. E., Lendinez, S., Khovaylo, V., & Novosad, V. Dynamic control of metastable remanent states in mesoscale magnetic elements. United States. doi:10.1063/1.4906959.
Ding, J., Jain, S., Pearson, J. E., Lendinez, S., Khovaylo, V., and Novosad, V. Thu . "Dynamic control of metastable remanent states in mesoscale magnetic elements". United States. doi:10.1063/1.4906959.
@article{osti_1356369,
title = {Dynamic control of metastable remanent states in mesoscale magnetic elements},
author = {Ding, J. and Jain, S. and Pearson, J. E. and Lendinez, S. and Khovaylo, V. and Novosad, V.},
abstractNote = {The formation of the vortex-antivortex-vortex (v-av-v) metastable remanent states in elongated magnetic elements have been systematically investigated using micromagnetic modeling. It is demonstrated that the v-av-v magnetization pattern can be effectively stabilized by exciting the single vortex state with an external RF field. Furthermore, we show that a set of different polarity combinations of the vortex cores can be achieved by adjusting the frequency and amplitude of the excitation field. The corresponding dynamic response in time- and frequency-domain has also been presented. Owing to the diversity of the collective modes with different vortex-antivortex combinations, this system may open promising perspectives in the area of spin transfer torque oscillators.},
doi = {10.1063/1.4906959},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}