Magnetic droplet solitons

Macià, Ferran; Kent, Andrew D.

doi:10.1063/5.0018251

Title: Magnetic droplet solitons

Abstract

Magnetic droplet solitons are dynamical magnetic textures that form due to an attractive interaction between spin waves in thin films with perpendicular magnetic anisotropy. Spin currents and the spin torques associated with these currents enable their formation as they provide a means to excite non-equilibrium spin-wave populations and compensate their decay. Recent years have seen rapid advances in experiments that realize and study magnetic droplets. Important advances include the first direct x-ray images of droplets, determination of their threshold and sustaining currents, measurement of their generation and annihilation time, and evidence for drift instabilities, which can limit their lifetime. This perspective discusses these studies and contrasts these solitons to other types of spin-current excitations, such as spin-wave bullets, and static magnetic textures, including magnetic vortices and skyrmions. Magnetic droplet solitons can also serve as current controlled microwave frequency oscillators with potential applications in neuromorphic chips as nonlinear oscillators with memory.

Authors:

^[1];

^[2]

Inst. de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra (Spain); Univ. of Barcelona (Spain)
New York Univ. (NYU), NY (United States)

Publication Date:: Mon Sep 14 00:00:00 EDT 2020

Research Org.:: Univ. of California, San Diego, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Spanish Government; National Science Foundation (NSF)

OSTI Identifier:: 1713190

Alternate Identifier(s):: OSTI ID: 1658643

Grant/Contract Number:: SC0019273; RYC-2014-16515; MAT2015-69144-P; SEV-2015-0496; MAT2017-85232-R; DMR-1610416

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 128; Journal Issue: 10; Journal ID: ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; magnetic anisotropy; thin films; spin-transfer-torque; nanocontacts; magnetic ordering; microwave frequencies; oscillators

Citation Formats


                    Macià, Ferran, and Kent, Andrew D. Magnetic droplet solitons.  United States: N. p., 2020. 
Web.  doi:10.1063/5.0018251.

Copy to clipboard


                    Macià, Ferran, & Kent, Andrew D. Magnetic droplet solitons.  United States.  https://doi.org/10.1063/5.0018251

Copy to clipboard


                    Macià, Ferran, and Kent, Andrew D. Mon .  
"Magnetic droplet solitons".  United States.  https://doi.org/10.1063/5.0018251.  https://www.osti.gov/servlets/purl/1713190.

Copy to clipboard


                    
@article{osti_1713190,

  title        = {Magnetic droplet solitons},

  author       = {Macià, Ferran and Kent, Andrew D.},

  abstractNote = {Magnetic droplet solitons are dynamical magnetic textures that form due to an attractive interaction between spin waves in thin films with perpendicular magnetic anisotropy. Spin currents and the spin torques associated with these currents enable their formation as they provide a means to excite non-equilibrium spin-wave populations and compensate their decay. Recent years have seen rapid advances in experiments that realize and study magnetic droplets. Important advances include the first direct x-ray images of droplets, determination of their threshold and sustaining currents, measurement of their generation and annihilation time, and evidence for drift instabilities, which can limit their lifetime. This perspective discusses these studies and contrasts these solitons to other types of spin-current excitations, such as spin-wave bullets, and static magnetic textures, including magnetic vortices and skyrmions. Magnetic droplet solitons can also serve as current controlled microwave frequency oscillators with potential applications in neuromorphic chips as nonlinear oscillators with memory.},

  doi          = {10.1063/5.0018251},

  journal      = {Journal of Applied Physics},

  number       = 10,

  volume       = 128,

  place        = {United States},

  year         = {Mon Sep 14 00:00:00 EDT 2020},

  month        = {Mon Sep 14 00:00:00 EDT 2020}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1063/5.0018251

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Stable magnetic droplet solitons in spin-transfer nanocontacts
journal, November 2014

Macià, Ferran; Backes, Dirk; Kent, Andrew D.
Nature Nanotechnology, Vol. 9, Issue 12
DOI: 10.1038/nnano.2014.255

Magnetic nano-oscillator driven by pure spin current
journal, October 2012

Demidov, Vladislav E.; Urazhdin, Sergei; Ulrichs, Henning
Nature Materials, Vol. 11, Issue 12
DOI: 10.1038/nmat3459

Neuromorphic computing with nanoscale spintronic oscillators
journal, July 2017

Torrejon, Jacob; Riou, Mathieu; Araujo, Flavio Abreu
Nature, Vol. 547, Issue 7664
DOI: 10.1038/nature23011

Two-dimensional mutually synchronized spin Hall nano-oscillator arrays for neuromorphic computing
journal, December 2019

Zahedinejad, Mohammad; Awad, Ahmad A.; Muralidhar, Shreyas
Nature Nanotechnology, Vol. 15, Issue 1
DOI: 10.1038/s41565-019-0593-9

Nonwhite frequency noise in spin torque oscillators and its effect on spectral linewidth
journal, August 2010

Keller, Mark W.; Pufall, M. R.; Rippard, W. H.
Physical Review B, Vol. 82, Issue 5
DOI: 10.1103/PhysRevB.82.054416

Conductance and exchange coupling of two ferromagnets separated by a tunneling barrier
journal, April 1989

Slonczewski, J. C.
Physical Review B, Vol. 39, Issue 10
DOI: 10.1103/PhysRevB.39.6995

Spin Torque-Generated Magnetic Droplet Solitons
journal, March 2013

Mohseni, S. M.; Sani, S. R.; Persson, J.
Science, Vol. 339, Issue 6125
DOI: 10.1126/science.1230155

Deterministic drift instability and stochastic thermal perturbations of magnetic dissipative droplet solitons
journal, April 2016

Wills, P.; Iacocca, E.; Hoefer, M. A.
Physical Review B, Vol. 93, Issue 14
DOI: 10.1103/PhysRevB.93.144408

Phase-locking of multiple magnetic droplets by a microwave magnetic field
journal, February 2017

Wang, Chengjie; Xiao, Dun; Zhou, Yan
AIP Advances, Vol. 7, Issue 5
DOI: 10.1063/1.4975660

High Q factor over 3000 due to out-of-plane precession in nano-contact spin-torque oscillator based on magnetic tunnel junctions
journal, January 2014

Maehara, Hiroki; Kubota, Hitoshi; Suzuki, Yoshishige
Applied Physics Express, Vol. 7, Issue 2
DOI: 10.7567/apex.7.023003

Effect of Temperature on Magnetic Solitons Induced by Spin-Transfer Torque
journal, May 2017

Lendínez, Sergi; Hang, Jinting; Vélez, Saül
Physical Review Applied, Vol. 7, Issue 5
DOI: 10.1103/PhysRevApplied.7.054027

Dynamically stabilized magnetic skyrmions
journal, September 2015

Zhou, Y.; Iacocca, E.; Awad, A. A.
Nature Communications, Vol. 6, Issue 1
DOI: 10.1038/ncomms9193

Spin-wave interference patterns created by spin-torque nano-oscillators for memory and computation
journal, January 2011

Macià, Ferran; Kent, Andrew D.; Hoppensteadt, Frank C.
Nanotechnology, Vol. 22, Issue 9
DOI: 10.1088/0957-4484/22/9/095301

Thermal activation barriers for creation and annihilation of magnetic droplet solitons in the presence of spin transfer torque
journal, May 2020

Chaves-O'Flynn, Gabriel D.; Stein, D. L.
Physical Review B, Vol. 101, Issue 18
DOI: 10.1103/PhysRevB.101.184421

Direct Observation of a Localized Magnetic Soliton in a Spin-Transfer Nanocontact
journal, September 2015

Backes, D.; Macià, F.; Bonetti, S.
Physical Review Letters, Vol. 115, Issue 12
DOI: 10.1103/PhysRevLett.115.127205