Related Experiment Video
Updated: May 14, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Emergent superstructural dynamic order due to competing antiferroelectric and antiferrodistortive instabilities in
Jong-Woo Kim1, Paul Thompson, Simon Brown
1X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA. jwkim@aps.anl.gov
Abstract:
Microscopic structural instabilities of EuTiO3 single crystals were investigated by synchrotron x-ray diffraction. Antiferrodistortive (AFD) oxygen octahedron rotational order was observed alongside Ti derived antiferroelectric distortions. The competition between the two instabilities is reconciled through a cooperatively modulated structure allowing both to coexist. The combination of electric and magnetic fields increases the population of the modulated AFD order, illustrating how the origin of the large magnetoelectric coupling derives from the dynamic equilibrium between AFD and polar instabilities.
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