Effects of Chiral Polypeptides on Skyrmion Stability and Dynamics

Yael Kapon, Fabian Kammerbauer, Theo Balland, Shira Yochelis, Mathias Kläui*, Yossi Paltiel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Magnetic skyrmions, topologically stabilized chiral spin textures in magnetic thin films, have garnered considerable interest due to their efficient manipulation and resulting potential as efficient nanoscale information carriers. One intriguing approach to address the challenge of tuning skyrmion properties involves using chiral molecules. Chiral molecules can locally manipulate magnetic properties by inducing magnetization through spin exchange interactions and by creating spin currents. Here, Magneto-Optical Kerr Effect (MOKE) microscopy is used to image the impact of chiral polypeptides on chiral magnetic structures. The chiral polypeptides shift the spin reorientation transition temperature, reduce thermal skyrmion motion, and alter the coercive field locally, enhancing skyrmion stability and thus enabling local control. These findings demonstrate the potential of chiral molecules to address challenges for skyrmion based devices, thus paving the way to applications such as the racetrack memory, reservoir computing and others.

Original languageEnglish
JournalNano Letters
DOIs
StateAccepted/In press - 2024

Bibliographical note

Publisher Copyright:
© 2024 The Authors.

Keywords

  • chiral-induced spin selectivity effect
  • magnetic memory
  • organic spintronics
  • skyrmions
  • spintronics

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