End station for nanoscale magnetic materials study: combination of scanning tunneling microscopy and soft X-ray magnetic circular dichroism spectroscopy

Tetsuro Ueno; Masahiro Sawada; Yusuke Kishimizu; Akio Kimura; Hirofumi Namatame; Masaki Taniguchi

doi:10.1063/1.4770126

End station for nanoscale magnetic materials study: combination of scanning tunneling microscopy and soft X-ray magnetic circular dichroism spectroscopy

Rev Sci Instrum. 2012 Dec;83(12):123903. doi: 10.1063/1.4770126.

Authors

Tetsuro Ueno¹, Masahiro Sawada, Yusuke Kishimizu, Akio Kimura, Hirofumi Namatame, Masaki Taniguchi

Affiliation

¹ Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan.

PMID: 23278001
DOI: 10.1063/1.4770126

Abstract

We have constructed an end station for nanoscale magnetic materials study at the soft X-ray beamline HiSOR BL-14 at Hiroshima Synchrotron Radiation Center. An ultrahigh-vacuum scanning tunneling microscope (STM) was installed for an in situ characterization of nanoscale magnetic materials in combination with soft X-ray magnetic circular dichroism (XMCD) spectroscopy experiment. The STM was connected to the XMCD experimental station via damper bellows to isolate it from environmental vibrations, thus achieving efficient spatial resolution for observing Si(111) surface at atomic resolution. We performed an in situ experiment with STM and XMCD spectroscopy on Co nanoclusters on an Au(111) surface and explored its practical application to investigate magnetic properties for well-characterized nanoscale magnetic materials.