Observation of nanoscale magnetic fields using twisted electron beams
- CNR-Istituto Nanoscienze, Modena (Italy); CNR-IMEM Parco Area delle Scienze 37/A, Parma (Italy)
- Univ. of Oregon, Eugene, OR (United States). Department of Physics
- CNR-Istituto Nanoscienze, Modena (Italy); University of Modena and Reggio Emilia, Modena (Italy)
- CNR-IMM Bologna (Italy)
- University of Ottawa, ON (Canada). Department of Physics
- CNR-Istituto Nanoscienze, Modena (Italy)
- CNR-Istituto Nanoscienze, Modena (Italy); University of Modena and Reggio Emilia, Modena (Italy)
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grunberg Institute, Forschungszentrum, Julich (Germany)
- 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
- 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
- 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
Web of Science
Similar Records
LORENTZ PHASE IMAGING AND IN-SITU LORENTZ MICROSCOPY OF PATTERNED CO-ARRAYS.
Nanoscale three-dimensional reconstruction of electric and magnetic stray fields around nanowires