skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Detecting magnetic ordering with atomic size electron probes

Journal Article · · Advanced Structural and Chemical Imaging
 [1];  [2];  [2];  [3];  [4];  [4];  [3];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  2. Uppsala Univ. (Sweden). Dept. Physics and Astronomy
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Division

While magnetism originates at the atomic scale, the existing spectroscopic techniques sensitive to magnetic signals only produce spectra with spatial resolution on a larger scale. However, recently, it has been theoretically argued that atomic size electron probes with customized phase distributions can detect magnetic circular dichroism. Here, we report a direct experimental real-space detection of magnetic circular dichroism in aberration-corrected scanning transmission electron microscopy (STEM). Using an atomic size-aberrated electron probe with a customized phase distribution, we reveal the checkerboard antiferromagnetic ordering of Mn moments in LaMnAsO by observing a dichroic signal in the Mn L-edge. The novel experimental setup presented here, which can easily be implemented in aberration-corrected STEM, opens new paths for probing dichroic signals in materials with unprecedented spatial resolution.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Swedish Research Council (SRC); Goran Gustafsson Foundation; Swedish National Infrastructure for Computing
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1311213
Journal Information:
Advanced Structural and Chemical Imaging, Vol. 2, Issue 1; ISSN 2198-0926
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (40)

Strong magnetic x-ray dichroism in 2 p absorption spectra of 3 d transition-metal ions journal June 1991
Absorption of circularly polarized x rays in iron journal February 1987
Detection of magnetic circular dichroism using a transmission electron microscope journal May 2006
Surfactant Organic Molecules Restore Magnetism in Metal-Oxide Nanoparticle Surfaces journal April 2012
Detection of magnetic circular dichroism on the two-nanometer scale journal September 2008
Erratum: corrigendum: Sub-ångstrom resolution using aberration corrected electron optics journal September 2002
Spectroscopic Imaging of Single Atoms Within a Bulk Solid journal March 2004
Atomic-Scale Chemical Imaging of Composition and Bonding by Aberration-Corrected Microscopy journal February 2008
Achieving Atomic Resolution Magnetic Dichroism by Controlling the Phase Symmetry of an Electron Probe journal September 2014
Towards sub-Å electron beams journal June 1999
Iron-Based Layered Superconductor La[O 1- x F x ]FeAs ( x = 0.05−0.12) with T c = 26 K journal March 2008
Giant magnetoresistance in oxypnictides (La,Nd)OMnAs journal January 2010
Short- and long-range magnetic order in LaMnAsO journal February 2016
Insulator-to-metal transition and large thermoelectric effect in La 1−x Sr x MnAsO journal April 2012
Local electronic structure information contained in energy-filtered diffraction patterns journal August 2011
An electron microscope for the aberration-corrected era journal February 2008
Electron Energy-Loss Spectroscopy in the Electron Microscope book January 2011
Radiation damage in the TEM and SEM journal August 2004
Generation of electron beams carrying orbital angular momentum journal April 2010
Production and application of electron vortex beams journal September 2010
Electron Vortex Beams with High Quanta of Orbital Angular Momentum journal January 2011
A new way of producing electron vortex probes for STEM journal February 2012
Nonlocality in Imaging journal May 2005
ROBPCA: A New Approach to Robust Principal Component Analysis journal February 2005
Robust Locally Weighted Regression and Smoothing Scatterplots journal December 1979
Experimental application of sum rules for electron energy loss magnetic chiral dichroism journal August 2007
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Experimental Confirmation of the X-Ray Magnetic Circular Dichroism Sum Rules for Iron and Cobalt journal July 1995
Atomic-Scale Chemical Imaging of Composition and Bonding by Aberration-Corrected Microscopy journal August 2008
Detection of magnetic circular dichroism on the two-nanometer scale text January 2008
Absorption of circularly polarized x rays in iron text January 1987
Insulator-to-metal transition and large thermoelectric effect in La$_{1-x}$Sr$_{x}$MnAsO text January 2011
A new way of producing electron vortex probes for STEM text January 2014
Achieving atomic resolution magnetic dichroism by controlling the phase symmetry of an electron probe text January 2014
Short- and long-range magnetic order in LaMnAsO text January 2015
Spectroscopic imaging of single atoms within a bulk solid text January 2004
Sum rules for electron energy loss near edge spectra journal August 2007
Scattering of electron vortex beams on a magnetic crystal: Towards atomic-resolution magnetic measurements journal April 2014
Aberrated electron probes for magnetic spectroscopy with atomic resolution: Theory and practical aspects journal March 2016

Cited By (7)

Magnetic measurements with atomic-plane resolution journal August 2016
Atomic scale imaging of magnetic circular dichroism by achromatic electron microscopy journal February 2018
Probing the localization of magnetic dichroism by atomic-size astigmatic and vortex electron beams journal March 2018
Atomic-scale mapping of interface reconstructions in multiferroic heterostructures journal December 2018
Managing dose-, damage- and data-rates in multi-frame spectrum-imaging journal January 2018
Origins and demonstrations of electrons with orbital angular momentum
  • McMorran, Benjamin J.; Agrawal, Amit; Ercius, Peter A.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 375, Issue 2087 https://doi.org/10.1098/rsta.2015.0434
journal February 2017
Single-pass STEM-EMCD on a zone axis using a patterned aperture: progress in experimental and data treatment methods journal December 2019