Integrating all-optical switching with spintronics

M.L.M. Lalieu (Corresponding author), R. Lavrijsen, B. Koopmans

Research output: Contribution to journalArticleAcademicpeer-review

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33 Downloads (Pure)

Abstract

All-optical switching (AOS) of magnetic materials describes the reversal of the magnetization using short (femtosecond) laser pulses, and received extensive attention in the past decade due to its high potential for fast and energy-efficient data writing in future spintronic memory applications. Unfortunately, the AOS mechanism in the ferromagnetic multilayers commonly used in spintronics needs multiple pulses for the magnetization reversal, losing its speed and energy efficiency. Here, we experimentally demonstrate on-the-fly single-pulse AOS in combination with spin Hall effect (SHE) driven motion of magnetic domains in Pt/Co/Gd synthetic-ferrimagnetic racetracks. Moreover, using field-driven-SHE-assisted domain wall (DW) motion measurements, both the SHE efficiency in the racetrack is determined and the chirality of the optically written DW’s is verified. Our experiments demonstrate that Pt/Co/Gd racetracks facilitate both single-pulse AOS as well as efficient SHE-induced domain wall motion, which might ultimately pave the way towards integrated photonic memory devices.

Original languageEnglish
Article number110
Number of pages6
JournalNature Communications
Volume10
Issue number1
DOIs
Publication statusPublished - 10 Jan 2019

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Spin Hall effect
Magnetoelectronics
optical switching
Hall effect
Domain walls
pulses
Optics and Photonics
domain wall
Data storage equipment
Magnetization reversal
magnetization
Magnetic domains
Chirality
Magnetic materials
Lasers
magnetic domains
magnetic materials
Ultrashort pulses
chirality
Photonics

Cite this

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title = "Integrating all-optical switching with spintronics",
abstract = "All-optical switching (AOS) of magnetic materials describes the reversal of the magnetization using short (femtosecond) laser pulses, and received extensive attention in the past decade due to its high potential for fast and energy-efficient data writing in future spintronic memory applications. Unfortunately, the AOS mechanism in the ferromagnetic multilayers commonly used in spintronics needs multiple pulses for the magnetization reversal, losing its speed and energy efficiency. Here, we experimentally demonstrate on-the-fly single-pulse AOS in combination with spin Hall effect (SHE) driven motion of magnetic domains in Pt/Co/Gd synthetic-ferrimagnetic racetracks. Moreover, using field-driven-SHE-assisted domain wall (DW) motion measurements, both the SHE efficiency in the racetrack is determined and the chirality of the optically written DW’s is verified. Our experiments demonstrate that Pt/Co/Gd racetracks facilitate both single-pulse AOS as well as efficient SHE-induced domain wall motion, which might ultimately pave the way towards integrated photonic memory devices.",
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Integrating all-optical switching with spintronics. / Lalieu, M.L.M. (Corresponding author); Lavrijsen, R.; Koopmans, B.

In: Nature Communications, Vol. 10, No. 1, 110, 10.01.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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