Soft x-ray coherent diffraction imaging on magnetic nanostructures

ORAL

Abstract

Coherent soft X-rays diffraction imaging enable coherent magnetic resonance scattering at transition metal L-edge to be probed so that magnetic domains could be imaged with very high spatial resolution with phase contrast, reaching sub-10nm. One of the overwhelming advantages of using coherent X-rays is the ability to resolve phase contrast images with linearly polarized light with both phase and absorption contrast comparing to real-space imaging, which can only be studied with circularly polarized light with absorption contrast only. Here we report our first results on high-resolution of magnetic domains imaging of CoPd multilayer thin film with coherent soft X-ray ptychography method. We are aiming to resolve and understand magnetic domain wall structures with the highest obtainable resolution here at Advanced Light Source. In principle types of magnetic domain walls could be studied so that Neel or Bloch walls can be distinguished by imaging.

*This work at LBNL was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the US Department of Energy (contract no. DE-AC02- 05CH11231).

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Authors

  • Xiaowen Shi

    • Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA
    • Lawrence Berkeley Natl Lab

  • J.C.T. Lee

    • Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA
    • Lawrence Berkeley Natl Lab
    • Lawrence Berkely Nation Labaratory

  • Shrawan Mishra

    • Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA
    • Lawrence Berkeley Natl Lab

  • Daniel Parks

    • Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA
    • Lawrence Berkeley Natl Lab

  • Tolek Tyliszczak

    • Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA
    • Lawrence Berkeley National Laboratory
    • Lawrence Berkeley Natl Lab

  • David Shapiro

    • Lawrence Berkeley Natl Lab

  • Sujoy Roy

    • Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA
    • Lawrence Berkeley National Laboratory, USA
    • Lawrence Berkeley Natl Lab

  • Steve Kevan

    • Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA
    • Lawrence Berkeley Natl Lab