Nanoscale magnetic imaging using circularly polarized high-harmonic radiation
| Autor: | Manfred Albrecht, Christina Nolte, Murat Sivis, Stefan Mathias, Claus Ropers, Sascha Schäfer, Ofer Kfir, Oren Cohen, Sergey Zayko, Daniel Steil, Marcel Möller, Birgit Hebler, Sri Sai Phani Kanth Arekapudi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Magnetic domain Magnetism Holography FOS: Physical sciences 01 natural sciences law.invention 010309 optics Optics law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Physics::Atomic Physics 010306 general physics Image resolution Research Articles Magnetization dynamics Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics business.industry Physics SciAdv r-articles Harmonics business Ultrashort pulse Optics (physics.optics) Physics - Optics Research Article Coherence (physics) |
| Zdroj: | Science Advances |
| ISSN: | 2375-2548 |
| DOI: | 10.1126/sciadv.aao4641 |
| Popis: | We introduce laboratory-scale magneto-optical imaging with sub–50-nm resolution using high-harmonic radiation. This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-harmonic radiation. We utilize the magneto-optical contrast of worm-like magnetic domains in a Co/Pd multilayer 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. |
| Databáze: | OpenAIRE |
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