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Interface Control of Emergent Ferroic Order in Ruddlesden-Popper Srn+1TinO3n+1

Turan Birol, Nicole A. Benedek, and Craig J. Fennie
Phys. Rev. Lett. 107, 257602 – Published 13 December 2011; Erratum Phys. Rev. Lett. 108, 029901 (2012)
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Abstract

We discovered from first principles an unusual polar state in the low n Srn+1TinO3n+1 Ruddlesden-Popper (RP) layered perovskites in which ferroelectricity is nearly degenerate with antiferroelectricity, a relatively rare form of ferroic order. We show that epitaxial strain plays a key role in tuning the “perpendicular coherence length” of the ferroelectric mode, and does not induce ferroelectricity in these low-dimensional RP materials as is well known to occur in SrTiO3. These systems present an opportunity to manipulate the coherence length of a ferroic distortion in a controlled way, without disorder or a free surface.

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  • Received 7 October 2011
  • Corrected 27 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.257602

© 2011 American Physical Society

Erratum

Authors & Affiliations

Turan Birol, Nicole A. Benedek, and Craig J. Fennie

  • School of Applied Engineering Physics, Cornell University, Ithaca, New York 14853, USA

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Issue

Vol. 107, Iss. 25 — 16 December 2011

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