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Nanoscale magnetic imaging using circularly polarized high-harmonic radiation

  • Ofer Kfir*
  • , Sergey Zayko
  • , Christina Nolte
  • , Murat Sivis
  • , Marcel Möller
  • , Birgit Hebler
  • , Sri Sai Phani Kanth Arekapudi
  • , Daniel Steil
  • , Sascha Schäfer
  • , Manfred Albrecht
  • , Oren Cohen
  • , Stefan Mathias
  • , Claus Ropers
  • *Corresponding author for this work
  • University of Göttingen
  • Technion-Israel Institute of Technology
  • Augsburg University

Research output: Contribution to journalArticlepeer-review

111 Scopus citations

Abstract

This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-harmonic radiation. We utilize themagneto-optical contrast ofworm-likemagnetic domains in a Co/Pdmultilayer structure, obtaining quantitative amplitude and phase maps by lensless imaging. A diffraction-limited spatial resolution of 49 nm is achieved with iterative phase reconstruction enhanced by a holographic mask. Harnessing the exceptional coherence of high harmonics, this approach will facilitate quantitative, element-specific, and spatially resolved studies of ultrafast magnetization dynamics, advancing both fundamental and applied aspects of nanoscale magnetism.

Original languageEnglish
Article numbereaao4641
JournalScience advances
Volume3
Issue number12
DOIs
StatePublished - Dec 2017
Externally publishedYes

Funding

FundersFunder number
Horizon 2020 Framework Programme752533

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