Fluctuations and Pinning for Individually Manipulated Skyrmions

Reichhardt, C. J. O.; Reichhardt, C.

doi:10.3389/fphy.2021.767491

Title: Fluctuations and Pinning for Individually Manipulated Skyrmions

Abstract

We numerically examine the dynamics of individually dragged skyrmions interacting simultaneously with an array of other skyrmions and quenched disorder. For drives just above depinning, we observe a broadband noise signal with a 1/ f characteristic, while at higher drives, narrowband or white noise appears. Even in the absence of quenched disorder, the threshold force that must be applied to translate the driven skyrmion is finite due to elastic interactions with other skyrmions. The depinning threshold increases as the strength of the quenched disorder is raised. Above the depinning force, the skyrmion moves faster in the presence of quenched disorder than in a disorder-free system since the pinning sites prevent other skyrmions from being dragged along with the driven skyrmion. For strong pinning, we find a stick-slip motion of the driven skyrmion which produces a telegraph noise signature. The depinning threshold increases monotonically with skyrmion density in the absence of quenched disorder, but when pinning is present, the depinning threshold changes nonmonotonically with skyrmion density, and there are reentrant pinned phases due to a competition between pinning induced by the quenched disorder and that produced by the elastic interactions of the skyrmion lattice.

Authors:: Reichhardt, C. J. O.; Reichhardt, C.

Publication Date:: Tue Nov 30 00:00:00 EST 2021

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program

OSTI Identifier:: 1833445

Alternate Identifier(s):: OSTI ID: 1846915

Report Number(s):: LA-UR-21-28609
Journal ID: ISSN 2296-424X; 767491

Grant/Contract Number:: 89233218CNA000001

Resource Type:: Published Article

Journal Name:: Frontiers in Physics

Additional Journal Information:: Journal Name: Frontiers in Physics Journal Volume: 9; Journal ID: ISSN 2296-424X

Publisher:: Frontiers Media SA

Country of Publication:: Switzerland

Language:: English

Subject:: 36 MATERIALS SCIENCE; skyrmion; dynamic phases; broadband noise; telegraph noise; depinning

Citation Formats


                    Reichhardt, C. J. O., and Reichhardt, C. Fluctuations and Pinning for Individually Manipulated Skyrmions.  Switzerland: N. p., 2021. 
Web.  doi:10.3389/fphy.2021.767491.

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                    Reichhardt, C. J. O., & Reichhardt, C. Fluctuations and Pinning for Individually Manipulated Skyrmions.  Switzerland.  https://doi.org/10.3389/fphy.2021.767491

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                    Reichhardt, C. J. O., and Reichhardt, C. Tue .  
"Fluctuations and Pinning for Individually Manipulated Skyrmions".  Switzerland.  https://doi.org/10.3389/fphy.2021.767491.

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@article{osti_1833445,

  title        = {Fluctuations and Pinning for Individually Manipulated Skyrmions},

  author       = {Reichhardt, C. J. O. and Reichhardt, C.},

  abstractNote = {We numerically examine the dynamics of individually dragged skyrmions interacting simultaneously with an array of other skyrmions and quenched disorder. For drives just above depinning, we observe a broadband noise signal with a 1/ f characteristic, while at higher drives, narrowband or white noise appears. Even in the absence of quenched disorder, the threshold force that must be applied to translate the driven skyrmion is finite due to elastic interactions with other skyrmions. The depinning threshold increases as the strength of the quenched disorder is raised. Above the depinning force, the skyrmion moves faster in the presence of quenched disorder than in a disorder-free system since the pinning sites prevent other skyrmions from being dragged along with the driven skyrmion. For strong pinning, we find a stick-slip motion of the driven skyrmion which produces a telegraph noise signature. The depinning threshold increases monotonically with skyrmion density in the absence of quenched disorder, but when pinning is present, the depinning threshold changes nonmonotonically with skyrmion density, and there are reentrant pinned phases due to a competition between pinning induced by the quenched disorder and that produced by the elastic interactions of the skyrmion lattice.},

  doi          = {10.3389/fphy.2021.767491},

  journal      = {Frontiers in Physics},

  number       = ,

  volume       = 9,

  place        = {Switzerland},

  year         = {Tue Nov 30 00:00:00 EST 2021},

  month        = {Tue Nov 30 00:00:00 EST 2021}

}

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Title: Fluctuations and Pinning for Individually Manipulated Skyrmions

Abstract

Citation Formats

Washboard Frequency of the Moving Vortex Lattice in YB a 2 C u 3 O 6.93 Detected by ac-dc Interference journal, May 1995

Jamming, fragility and pinning phenomena in superconducting vortex systems journal, July 2020

Particle model for skyrmions in metallic chiral magnets: Dynamics, pinning, and creep journal, June 2013

Depinning by Fracture in a Glassy Background journal, March 2003

Forced motion of a probe particle near the colloidal glass transition journal, August 2004

Probing the pinning strength of magnetic vortex cores with sub-nanometer resolution journal, June 2020

Collective Transport Properties of Driven Skyrmions with Random Disorder journal, May 2015

Flux Flow Noise and Dynamical Transitions in a Flux Line Lattice journal, April 1995

Mechanical Control of Individual Superconducting Vortices journal, February 2016

Fluctuations, jamming, and yielding for a driven probe particle in disordered disk assemblies journal, November 2010

The dynamics of charge-density waves journal, October 1988

Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets journal, February 2016

Thermal creep and the skyrmion Hall angle in driven skyrmion crystals journal, December 2018

Steady-State Motion of Magnetic Domains journal, February 1973

Pinning and movement of individual nanoscale magnetic skyrmions via defects journal, May 2016

Skyrmion devices for memory and logic applications journal, May 2021

Aspects of jamming in two-dimensional athermal frictionless systems journal, January 2014

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Shear Thinning and Local Melting of Colloidal Crystals journal, September 2011

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Impurity-dependent gyrotropic motion, deflection and pinning of current-driven ultrasmall skyrmions in PdFe/Ir(111) surface journal, July 2020

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Nonequilibrium Dynamic Phase Diagram for Vortex Lattices journal, October 1998

The optical tweezer of skyrmions journal, September 2020

Active and Nonlinear Microrheology in Dense Colloidal Suspensions journal, June 2009

Universal current-velocity relation of skyrmion motion in chiral magnets journal, February 2013

Real-space Berry phases: Skyrmion soccer (invited) journal, May 2014

Capturing of a magnetic skyrmion with a hole journal, February 2015

Journey of an intruder through the fluidization and jamming transitions of a dense granular media journal, January 2010

Noise fluctuations and drive dependence of the skyrmion Hall effect in disordered systems journal, September 2016

Magnetic skyrmions: advances in physics and potential applications journal, June 2017

Dynamics and nonmonotonic drag for individually driven skyrmions journal, August 2021

Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review journal, December 2016

Optical manipulation of single flux quanta journal, September 2016

Diameter-independent skyrmion Hall angle observed in chiral magnetic multilayers journal, January 2020

Critical force in active microrheology journal, January 2020

Nonequilibrium Fluctuations and Enhanced Diffusion of a Driven Particle in a Dense Environment journal, May 2018

Mode locking phenomena of the current-induced skyrmion-lattice motion in microfabricated MnSi journal, November 2020

Washboard Frequency of the Moving Vortex Lattice in YB $a_{2}$ C $u_{3}$ $O_{6.93}$ Detected by ac-dc Interference
journal, May 1995

Jamming, fragility and pinning phenomena in superconducting vortex systems
journal, July 2020

Particle model for skyrmions in metallic chiral magnets: Dynamics, pinning, and creep
journal, June 2013

Depinning by Fracture in a Glassy Background
journal, March 2003

Forced motion of a probe particle near the colloidal glass transition
journal, August 2004

Probing the pinning strength of magnetic vortex cores with sub-nanometer resolution
journal, June 2020

Collective Transport Properties of Driven Skyrmions with Random Disorder
journal, May 2015

Flux Flow Noise and Dynamical Transitions in a Flux Line Lattice
journal, April 1995

Mechanical Control of Individual Superconducting Vortices
journal, February 2016

Fluctuations, jamming, and yielding for a driven probe particle in disordered disk assemblies
journal, November 2010

The dynamics of charge-density waves
journal, October 1988

Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets
journal, February 2016

Thermal creep and the skyrmion Hall angle in driven skyrmion crystals
journal, December 2018

Steady-State Motion of Magnetic Domains
journal, February 1973

Pinning and movement of individual nanoscale magnetic skyrmions via defects
journal, May 2016

Skyrmion devices for memory and logic applications
journal, May 2021

Aspects of jamming in two-dimensional athermal frictionless systems
journal, January 2014

Vortex washboard voltage noise in type-II superconductors
journal, October 2008

Manipulation of individual superconducting vortices and stick-slip motion in periodic pinning arrays
journal, June 2018

Slow steady flow of a skyrmion lattice in a confined geometry probed by narrow-band resistance noise
journal, September 2019

Shear Thinning and Local Melting of Colloidal Crystals
journal, September 2011

Real-space observation of a two-dimensional skyrmion crystal
journal, June 2010

Active and Passive Microrheology: Theory and Simulation
journal, January 2018

Impurity-dependent gyrotropic motion, deflection and pinning of current-driven ultrasmall skyrmions in PdFe/Ir(111) surface
journal, July 2020

Viscous decoupling transitions for individually dragged particles in systems with quenched disorder
journal, July 2008

Controlled manipulation of individual vortices in a superconductor
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Skyrmion Lattice in a Chiral Magnet
journal, February 2009

Nonequilibrium Dynamic Phase Diagram for Vortex Lattices
journal, October 1998

The optical tweezer of skyrmions
journal, September 2020

Active and Nonlinear Microrheology in Dense Colloidal Suspensions
journal, June 2009

Universal current-velocity relation of skyrmion motion in chiral magnets
journal, February 2013

Real-space Berry phases: Skyrmion soccer (invited)
journal, May 2014

Capturing of a magnetic skyrmion with a hole
journal, February 2015

Journey of an intruder through the fluidization and jamming transitions of a dense granular media
journal, January 2010

Noise fluctuations and drive dependence of the skyrmion Hall effect in disordered systems
journal, September 2016

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journal, June 2017

Dynamics and nonmonotonic drag for individually driven skyrmions
journal, August 2021

Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review
journal, December 2016

Optical manipulation of single flux quanta
journal, September 2016

Diameter-independent skyrmion Hall angle observed in chiral magnetic multilayers
journal, January 2020

Critical force in active microrheology
journal, January 2020

Nonequilibrium Fluctuations and Enhanced Diffusion of a Driven Particle in a Dense Environment
journal, May 2018

Mode locking phenomena of the current-induced skyrmion-lattice motion in microfabricated MnSi
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