Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip
Localized spectroscopy with simultaneous topographic, elemental and magnetic information is presented. A synchrotron X-ray scanning tunneling microscope has been employed for the local study of the X-ray magnetic circular dichroism at the FeL 2,3-edges of a thin iron film grown on Cu(111). Polarization-dependent X-ray absorption spectra have been obtained through a tunneling smart tip that serves as a photoelectron detector. In contrast to conventional spin-polarized scanning tunneling microscopy, X-ray excitations provide magnetic contrast even with a non-magnetic tip. Intensity variations in the photoexcited tip current point to chemical variations within a single magnetic Fe domain.
- Authors:
-
[1];
[2];
[2];
[3];
[4];
[1];
[1];
[2];
[3];
[5]
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials; Ohio Univ., Athens, OH (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Ohio Univ., Athens, OH (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials; Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Publication Date:
- Grant/Contract Number:
- AC02-06CH11357; SC70705; FG02-02ER46012
- Type:
- Accepted Manuscript
- Journal Name:
- Journal of Synchrotron Radiation (Online)
- Additional Journal Information:
- Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 23; Journal Issue: 2; Journal ID: ISSN 1600-5775
- Publisher:
- International Union of Crystallography
- Research Org:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; synchrotron X-ray scanning tunneling microscopy; smart tip; XMCD; chemical contrast
- OSTI Identifier:
- 1245212