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Switching the curl of polarization vectors by an irrotational electric field

Fei Xue, Linze Li, Jason Britson, Zijian Hong, Colin Andrew Heikes, Carolina Adamo, Darrell G. Schlom, Xiaoqing Pan, and Long-Qing Chen
Phys. Rev. B 94, 100103(R) – Published 26 September 2016
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Abstract

Ferroelectric vortex domains are of significant interest due to their rich physics and potential applications. Here, we propose the crystallographic, strain, and electric conditions for spontaneous vortex domains and study the influence of oxygen octahedral tilt on vortex wall orientations. Using 109° domain walls in BiFeO3 films as an example, it is demonstrated that vortex domains result from bound charge-density waves, i.e., from alternating positive and negative bound charges. The vortex domains lead to a net curl of the polarization vectors that can be switched by an irrotational electric field.

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  • Received 20 November 2015
  • Revised 2 March 2016

DOI:https://doi.org/10.1103/PhysRevB.94.100103

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Fei Xue1, Linze Li2, Jason Britson1, Zijian Hong1, Colin Andrew Heikes3, Carolina Adamo3, Darrell G. Schlom3,4, Xiaoqing Pan2, and Long-Qing Chen1

  • 1Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
  • 2Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
  • 3Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA
  • 4Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA

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Issue

Vol. 94, Iss. 10 — 1 September 2016

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