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Title: Observation of nanoscale magnetic fields using twisted electron beams

Journal Article · · Nature Communications
 [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

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.

Research Organization:
Univ. of Oregon, Eugene, OR (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0010466
OSTI ID:
1424912
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

References (45)

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Cited By (13)

Ultrafast generation and control of an electron vortex beam via chiral plasmonic near fields journal May 2019
A tunable path-separated electron interferometer with an amplitude-dividing grating beamsplitter journal December 2018
Generation and detection of spin-orbit coupled neutron beams journal September 2019
‘Twisted’ electrons journal February 2018
Coiling free electron matter waves journal April 2019
Nanostructuring of electron beams journal January 2019
Intrinsic multipole moments of non-Gaussian wave packets journal February 2019
Relativistic Quantum Dynamics of Twisted Electron Beams in Arbitrary Electric and Magnetic Fields journal July 2018
Electric Quadrupole Moment and the Tensor Magnetic Polarizability of Twisted Electrons and a Potential for their Measurements journal February 2019
Magnetic characterization of cobalt nanowires and square nanorings fabricated by focused electron beam induced deposition journal January 2018
Intrinsic multipole moments of the non-Gaussian wave packets text January 2018
Ultrafast Generation and Control of an Electron Vortex Beam via Chiral Plasmonic Near Fields text January 2018
Electric quadrupole moment and the tensor magnetic polarizability of twisted electrons and a potential for their measurements text January 2019

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