Demagnetizing fields in all-optical switching

Hoveyda, Farzaneh; Hohenstein, E; Judge, Russell A.; Smadici, S.

doi:10.1088/1361-648x/aa9e39

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Cited by 4 publications

(1 citation statement)

References 86 publications

(144 reference statements)

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“…A fully demagnetized state is a precursor to cumulative AOS in Co/Pd. The demagnetized state can then evolve to a reversed state [29].…”

Section: Resultsmentioning

confidence: 99%

Ultrafast demagnetization at high temperatures

Hoveyda

Hohenstein

Judge

et al. 2018

J. Phys.: Condens. Matter

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Time-resolved pump-probe measurements were made at variable heat accumulation in Co/Pd superlattices. Heat accumulation increases the baseline temperature and decreases the equilibrium magnetization. Transient ultrafast demagnetization first develops with higher fluence in parallel with strong equilibrium thermal spin fluctuations. The ultrafast demagnetization is then gradually removed as the equilibrium temperature approaches the Curie temperature. The transient magnetization time-dependence is well fit with the spin-flip scattering model.

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“…A fully demagnetized state is a precursor to cumulative AOS in Co/Pd. The demagnetized state can then evolve to a reversed state [29].…”

Section: Resultsmentioning

confidence: 99%

Ultrafast demagnetization at high temperatures

Hoveyda

Hohenstein

Judge

et al. 2018

J. Phys.: Condens. Matter

Self Cite

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Surface engineering of magnetic and mechanical properties of Ta/Pt/GdFeCo/IrMn/Pt heterostructures by femtosecond laser pulses

Коплак

Кравчук

Усеинов

et al. 2019

Applied Surface Science

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Delay modulation with a glass chopper in pump-probe experiments

Goharshenasanesfahani

Hoveyda

Scott-Jones

et al. 2019

Review of Scientific Instruments

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A delay modulator, made of glass plates rotating in a pump beam, is applied to measure time-resolved rates of transient processes in a pump-probe experimental setup. Glass plates modulate both delay and beam power. The contribution from the power modulation is subtracted by using a scaled-down measurement made with metal chopper blades. Delay modulation results obtained with this procedure are consistent with the derivative in delay of the usual power modulation and can show a larger signal to noise ratio.

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Demagnetizing fields in all-optical switching

Abstract: Time-resolved pump-probe measurements show ultrafast and heat accumulation demagnetization in Co/Pd superlattices on glass substrates. A model of demagnetizing fields and micromagnetic simulations are applied to examine the evolution of a demagnetized cylinder into a switched state.

Cited by 4 publications

References 86 publications

Ultrafast demagnetization at high temperatures

Ultrafast demagnetization at high temperatures

Surface engineering of magnetic and mechanical properties of Ta/Pt/GdFeCo/IrMn/Pt heterostructures by femtosecond laser pulses

Delay modulation with a glass chopper in pump-probe experiments

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