Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering

Wu, Benny

Title: Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering

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Abstract

We report on time-resolved coherent x-ray scattering experiments of laser induced magnetization dynamics in Co/Pd multilayers with a high repetition rate optical pump x-ray probe setup. Starting from a multi-domain ground state, the magnetization is uniformly reduced after excitation by an intense 50 fs laser pulse. Using the normalized time correlation, we study the magnetization recovery on a picosecond timescale. The dynamic scattering intensity is separated into an elastic portion at length scales above 65 nm which retains memory of the initial domain magnetization, and a fluctuating portion at smaller length scales corresponding to domain boundary motion during recovery.

Authors:: Wu, Benny

Publication Date:: Thu Apr 05 00:00:00 EDT 2012

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1037998

Report Number(s):: SLAC-PUB-14847
TRN: US201208%%126

DOE Contract Number:: AC02-76SF00515

Resource Type:: Journal Article

Journal Name:: Submitted to Applied Physics Letters

Additional Journal Information:: Journal Name: Submitted to Applied Physics Letters

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EXCITATION; GROUND STATES; LASERS; MAGNETIZATION; PROBES; SCATTERING; MATSCI, SYNCHRAD

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                    Wu, Benny. Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering.  United States: N. p., 2012. 
        Web.

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                    Wu, Benny. Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering.  United States.

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                    Wu, Benny. 2012.  
        "Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering".  United States.  https://www.osti.gov/servlets/purl/1037998.

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@article{osti_1037998,

  title        = {Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering},

  author       = {Wu, Benny},

  abstractNote = {We report on time-resolved coherent x-ray scattering experiments of laser induced magnetization dynamics in Co/Pd multilayers with a high repetition rate optical pump x-ray probe setup. Starting from a multi-domain ground state, the magnetization is uniformly reduced after excitation by an intense 50 fs laser pulse. Using the normalized time correlation, we study the magnetization recovery on a picosecond timescale. The dynamic scattering intensity is separated into an elastic portion at length scales above 65 nm which retains memory of the initial domain magnetization, and a fluctuating portion at smaller length scales corresponding to domain boundary motion during recovery.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1037998},
  journal      = {Submitted to Applied Physics Letters},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Apr 05 00:00:00 EDT 2012},

  month        = {Thu Apr 05 00:00:00 EDT 2012}

}

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