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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:
; ; ;  [1];  [1];  [2];  [3];  [4]
  1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. (Spain)
  3. National University of Science and Technology “MISiS,” Moscow 119049 (Russian Federation)
  4. (Russian Federation)
Publication Date:
OSTI Identifier:
22403040
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; COMPUTERIZED SIMULATION; CONTROL; EXCITATION; FREQUENCY DEPENDENCE; MAGNETIC MATERIALS; MAGNETISM; MAGNETIZATION; METASTABLE STATES; OSCILLATORS; RADIOWAVE RADIATION; SPIN; TORQUE; VORTICES

Citation Formats

Ding, J., Jain, S., Pearson, J. E., Novosad, V., E-mail: novosad@anl.gov, Lendinez, S., Departament de Fisica Fonamental, Universitat de Barcelona, E-08028 Barcelona, Khovaylo, V., and ITMO University, St. Petersburg 197101. 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., Novosad, V., E-mail: novosad@anl.gov, Lendinez, S., Departament de Fisica Fonamental, Universitat de Barcelona, E-08028 Barcelona, Khovaylo, V., & ITMO University, St. Petersburg 197101. Dynamic control of metastable remanent states in mesoscale magnetic elements. United States. doi:10.1063/1.4906959.
Ding, J., Jain, S., Pearson, J. E., Novosad, V., E-mail: novosad@anl.gov, Lendinez, S., Departament de Fisica Fonamental, Universitat de Barcelona, E-08028 Barcelona, Khovaylo, V., and ITMO University, St. Petersburg 197101. Thu . "Dynamic control of metastable remanent states in mesoscale magnetic elements". United States. doi:10.1063/1.4906959.
@article{osti_22403040,
title = {Dynamic control of metastable remanent states in mesoscale magnetic elements},
author = {Ding, J. and Jain, S. and Pearson, J. E. and Novosad, V., E-mail: novosad@anl.gov and Lendinez, S. and Departament de Fisica Fonamental, Universitat de Barcelona, E-08028 Barcelona and Khovaylo, V. and ITMO University, St. Petersburg 197101},
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}
}