Zykova-Timan, Tatyana and Salje, Ekhard K. H. (2014) Highly mobile vortex structures inside polar twin boundaries in SrTiO3. Applied Physics Letters, 104 (8). 082907. ISSN 0003-6951, ESSN: 1077-3118 DOI https://doi.org/10.1063/1.4866859
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Abstract
We present computer simulations of previously unknown polarization singularities (vortexes) inside polar SrTiO3 twin boundaries. Usually polarity in twin walls is ferri-electric, whereas vortex excitations lead to true ferroelectricity on a very local scale. As a result, in-plane electric fields can selectively stabilize one of the vortex polarization states and enhance the ability of the walls to move. This behavior can explain the well-known and uniquely high, mobility of twin boundaries in SrTiO3. For nanoscale ferroelectric memory devices, we envisage a precisely controllable device, where a desired domain wall pattern is manipulated by shifting the vortex position electrically.
Item Type: | Article |
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Additional Information: | © 2014 Author(s).. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. |
Uncontrolled Keywords: | 2014ARE; IA67; |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences 07 - Gold Open Access |
Journal or Publication Title: | Applied Physics Letters |
Volume: | 104 |
Page Range: | 082907 |
Identification Number: | https://doi.org/10.1063/1.4866859 |
Depositing User: | Sarah Humbert |
Date Deposited: | 05 May 2014 15:21 |
Last Modified: | 16 May 2014 12:25 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/3045 |
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