skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Phase locking of moving magnetic vortices in bridge-coupled nanodisks

Abstract

In this paper, phase locking dynamics of vortices induced by spin transfer torque in bridge-coupled nanodisks are studied by micromagnetic simulations. In the presence of the bridge coupling, the required time for the phase locking is dramatically reduced, and the phase difference between the two vortices keeps at a nonzero value after the phase locking. Moreover, the phase difference is affected significantly by bridge coupling, Oersted field distribution, nanodisk size, as well as in-plane bias magnetic field. In addition, the coupled gyrotropic frequency of vortices depends linearly on the perpendicular magnetic field. This systematic study of phase locking parameters, especially the phase difference, is important for the applications of vortex-based spin-torque nano-oscillators.

Authors:
; ; ;  [1];  [1];  [2]
  1. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22402980
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; COMPUTERIZED SIMULATION; COUPLING; MAGNETIC FIELDS; MAGNETIC FLUX; MAGNETISM; NANOSTRUCTURES; OSCILLATORS; SPIN; TORQUE; VORTICES

Citation Formats

Zhu, Qiyuan, Zheng, Qi, Liu, Xianyin, Liu, Qingfang, E-mail: liuqf@lzu.edu.cn, Wang, Jianbo, and Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000. Phase locking of moving magnetic vortices in bridge-coupled nanodisks. United States: N. p., 2015. Web. doi:10.1063/1.4919749.
Zhu, Qiyuan, Zheng, Qi, Liu, Xianyin, Liu, Qingfang, E-mail: liuqf@lzu.edu.cn, Wang, Jianbo, & Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000. Phase locking of moving magnetic vortices in bridge-coupled nanodisks. United States. doi:10.1063/1.4919749.
Zhu, Qiyuan, Zheng, Qi, Liu, Xianyin, Liu, Qingfang, E-mail: liuqf@lzu.edu.cn, Wang, Jianbo, and Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000. Thu . "Phase locking of moving magnetic vortices in bridge-coupled nanodisks". United States. doi:10.1063/1.4919749.
@article{osti_22402980,
title = {Phase locking of moving magnetic vortices in bridge-coupled nanodisks},
author = {Zhu, Qiyuan and Zheng, Qi and Liu, Xianyin and Liu, Qingfang, E-mail: liuqf@lzu.edu.cn and Wang, Jianbo and Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000},
abstractNote = {In this paper, phase locking dynamics of vortices induced by spin transfer torque in bridge-coupled nanodisks are studied by micromagnetic simulations. In the presence of the bridge coupling, the required time for the phase locking is dramatically reduced, and the phase difference between the two vortices keeps at a nonzero value after the phase locking. Moreover, the phase difference is affected significantly by bridge coupling, Oersted field distribution, nanodisk size, as well as in-plane bias magnetic field. In addition, the coupled gyrotropic frequency of vortices depends linearly on the perpendicular magnetic field. This systematic study of phase locking parameters, especially the phase difference, is important for the applications of vortex-based spin-torque nano-oscillators.},
doi = {10.1063/1.4919749},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}