Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip

doi:10.1107/S1600577515023383

Title: Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip

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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:

DiLullo, Andrew ^[1] ; Shirato, Nozomi ^[2] ; Cummings, Marvin ^[2] ; Kersell, Heath ^[3] ; Chang, Hao ^[4] ; Rosenmann, Daniel ^[1] ; Miller, Dean ^[1] ; Freeland, John W. ^[2] ; Hla, Saw -Wai ^[3] ; Rose, Volker ^[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:: 2016-01-28

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


                    DiLullo, Andrew, Shirato, Nozomi, Cummings, Marvin, Kersell, Heath, Chang, Hao, Rosenmann, Daniel, Miller, Dean, Freeland, John W., Hla, Saw -Wai, and Rose, Volker. Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip.  United States: N. p.,  
        Web.  doi:10.1107/S1600577515023383.

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                    DiLullo, Andrew, Shirato, Nozomi, Cummings, Marvin, Kersell, Heath, Chang, Hao, Rosenmann, Daniel, Miller, Dean, Freeland, John W., Hla, Saw -Wai, & Rose, Volker. Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip.  United States.  doi:10.1107/S1600577515023383.

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                    DiLullo, Andrew, Shirato, Nozomi, Cummings, Marvin, Kersell, Heath, Chang, Hao, Rosenmann, Daniel, Miller, Dean, Freeland, John W., Hla, Saw -Wai, and Rose, Volker. 2016.  
        "Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip".  United States.  
        doi:10.1107/S1600577515023383.  https://www.osti.gov/servlets/purl/1245212.

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@article{osti_1245212,

  title        = {Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip},

  author       = {DiLullo, Andrew and Shirato, Nozomi and Cummings, Marvin and Kersell, Heath and Chang, Hao and Rosenmann, Daniel and Miller, Dean and Freeland, John W. and Hla, Saw -Wai and Rose, Volker},

  abstractNote = {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 FeL2,3-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.},

  doi          = {10.1107/S1600577515023383},

  journal      = {Journal of Synchrotron Radiation (Online)},

  number       = 2,

  volume       = 23,

  place        = {United States},

  year         = {2016},

  month        = {1}

}

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10.1107/S1600577515023383
https://doi.org/10.1107/S1600577515023383

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Title: Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip

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