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Title: Observation of nanoscale magnetic fields using twisted electron beams

Abstract

Electron waves give an unprecedented enhancement to the field of microscopy by providing higher resolving power compared to their optical counterpart. Further information about a specimen, such as electric and magnetic features, can be revealed in electron microscopy because electrons possess both a magnetic moment and charge. In-plane magnetic structures in materials can be studied experimentally using the effect of the Lorentz force. On the other hand, full mapping of the magnetic field has hitherto remained challenging. Here we measure a nanoscale out-of-plane magnetic field by interfering a highly twisted electron vortex beam with a reference wave. We implement a recently developed holographic technique to manipulate the electron wavefunction, which gives free electrons an additional unbounded quantized magnetic moment along their propagation direction. Our finding demonstrates that full reconstruction of all three components of nanoscale magnetic fields is possible without tilting the specimen.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3];  [2]; ORCiD logo [4];  [5];  [6]; ORCiD logo [7];  [8];  [9];  [8];  [10]; ORCiD logo [2]; ORCiD logo [11]
  1. CNR-Istituto Nanoscienze, Modena (Italy); CNR-IMEM Parco Area delle Scienze 37/A, Parma (Italy)
  2. Univ. of Oregon, Eugene, OR (United States). Department of Physics
  3. CNR-Istituto Nanoscienze, Modena (Italy); University of Modena and Reggio Emilia, Modena (Italy)
  4. CNR-IMM Bologna (Italy)
  5. University of Ottawa, ON (Canada). Department of Physics
  6. CNR-Istituto Nanoscienze, Modena (Italy)
  7. CNR-Istituto Nanoscienze, Modena (Italy); University of Modena and Reggio Emilia, Modena (Italy)
  8. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grunberg Institute, Forschungszentrum, Julich (Germany)
  9. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grunberg Institute, Forschungszentrum, Julich (Germany); Chinese Academy of Sciences (CAS), Beijing (China). Institute of Physics
  10. University of Ottawa, ON (Canada). Department of Physics; Univ. of Rochester, NY (United States). Institute of Optics; Univ. of Glasgow, Scotland (United Kingdom). School of Physics and Astronomy
  11. University of Ottawa, ON (Canada). Department of Physics; nstitute for Advanced Studies in Basic Sciences, Zanjan (Iran). Department of Physics
Publication Date:
Research Org.:
Univ. of Oregon, Eugene, OR (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1424912
Grant/Contract Number:  
SC0010466
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE

Citation Formats

Grillo, Vincenzo, Harvey, Tyler R., Venturi, Federico, Pierce, Jordan S., Balboni, Roberto, Bouchard, Frédéric, Carlo Gazzadi, Gian, Frabboni, Stefano, Tavabi, Amir H., Li, Zi-An, Dunin-Borkowski, Rafal E., Boyd, Robert W., McMorran, Benjamin J., and Karimi, Ebrahim. Observation of nanoscale magnetic fields using twisted electron beams. United States: N. p., 2017. Web. doi:10.1038/s41467-017-00829-5.
Grillo, Vincenzo, Harvey, Tyler R., Venturi, Federico, Pierce, Jordan S., Balboni, Roberto, Bouchard, Frédéric, Carlo Gazzadi, Gian, Frabboni, Stefano, Tavabi, Amir H., Li, Zi-An, Dunin-Borkowski, Rafal E., Boyd, Robert W., McMorran, Benjamin J., & Karimi, Ebrahim. Observation of nanoscale magnetic fields using twisted electron beams. United States. doi:10.1038/s41467-017-00829-5.
Grillo, Vincenzo, Harvey, Tyler R., Venturi, Federico, Pierce, Jordan S., Balboni, Roberto, Bouchard, Frédéric, Carlo Gazzadi, Gian, Frabboni, Stefano, Tavabi, Amir H., Li, Zi-An, Dunin-Borkowski, Rafal E., Boyd, Robert W., McMorran, Benjamin J., and Karimi, Ebrahim. Mon . "Observation of nanoscale magnetic fields using twisted electron beams". United States. doi:10.1038/s41467-017-00829-5. https://www.osti.gov/servlets/purl/1424912.
@article{osti_1424912,
title = {Observation of nanoscale magnetic fields using twisted electron beams},
author = {Grillo, Vincenzo and Harvey, Tyler R. and Venturi, Federico and Pierce, Jordan S. and Balboni, Roberto and Bouchard, Frédéric and Carlo Gazzadi, Gian and Frabboni, Stefano and Tavabi, Amir H. and Li, Zi-An and Dunin-Borkowski, Rafal E. and Boyd, Robert W. and McMorran, Benjamin J. and Karimi, Ebrahim},
abstractNote = {Electron waves give an unprecedented enhancement to the field of microscopy by providing higher resolving power compared to their optical counterpart. Further information about a specimen, such as electric and magnetic features, can be revealed in electron microscopy because electrons possess both a magnetic moment and charge. In-plane magnetic structures in materials can be studied experimentally using the effect of the Lorentz force. On the other hand, full mapping of the magnetic field has hitherto remained challenging. Here we measure a nanoscale out-of-plane magnetic field by interfering a highly twisted electron vortex beam with a reference wave. We implement a recently developed holographic technique to manipulate the electron wavefunction, which gives free electrons an additional unbounded quantized magnetic moment along their propagation direction. Our finding demonstrates that full reconstruction of all three components of nanoscale magnetic fields is possible without tilting the specimen.},
doi = {10.1038/s41467-017-00829-5},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {2017},
month = {9}
}

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Cited by: 11 works
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    Works referencing / citing this record:

    Intrinsic multipole moments of non-Gaussian wave packets
    journal, February 2019