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

Research output: Contribution to journalArticlepeer-review

58 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

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