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Related Experiment Video

Updated: Apr 27, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Functional ferroic heterostructures with tunable integral symmetry.

C Becher¹, M Trassin², M Lilienblum¹

¹Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 4, 8093 Zurich, Switzerland.

Nature Communications

|July 3, 2014

Summary

Researchers developed a method to control symmetry in ferroic trilayer structures after growth. This allows for tunable symmetry in devices, enabling reversible control of functionalities like light emission.

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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

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Area of Science:

Condensed Matter Physics
Materials Science
Nanotechnology

Background:

Symmetry breaking is fundamental to physical properties, as noted by Pierre Curie.
Engineered heterostructures utilize integral symmetry for phenomena like one-way transparency.
Conventional heterostructures lack post-synthesis symmetry control, limiting their use in switching devices.

Purpose of the Study:

To demonstrate post-growth symmetry control in ferroic heterostructures.
To engineer devices with reversibly tunable symmetry.
To develop switchable light-emitting components.

Main Methods:

Fabrication of heterostructures using PbZr0.2Ti0.8O3 and BiFeO3 with a conducting oxide interlayer.
Layer-selective electric-field poling to reversibly switch inversion symmetry.
Demonstration of tunable light emission properties.

Main Results:

Achieved reversible on/off switching of inversion symmetry in ferroic trilayer structures.
Established ferroic trilayers as components with tunable symmetry.
Demonstrated electrically controlled light emission from these structures.

Conclusions:

Ferroic trilayer structures offer a platform for post-growth symmetry control.
This approach enables the development of switchable electronic and optoelectronic devices.
The concept is generalizable to other materials and symmetries.