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Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca,Sr)3Ti2 O7

Kong, Jing ; Manjón-Sanz, Alicia ; Liu, Jue ; Marlton, Frederick ; Lo, Tsz Wing ; Lei, Dangyuan ; Jørgensen, Mads Ry Vogel LU orcid and Pramanick, Abhijit (2023) In Physical Review B 107(22).
Abstract

We show that in contrast to the conventional view of a mean-field Landau-type behavior, the oxygen octahedral tilt (R) and polarization (P) in the A3B2O7 Ruddlesden-Popper hybrid improper ferroelectric (Ca,Sr)3Ti2O7 exhibits the scaling behavior of a 2D Ising class near the para-to-ferroelectric transition temperature (Tc). We also show that P exhibits an additional transition from a 2D Ising to a 3D mean-field critical behavior at a temperature Td<Tc, which is driven by enhanced interlayer dipolar correlations due to an increase in the ferroelectrically active B-site centered dipoles.

Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
107
issue
22
article number
224103
publisher
American Physical Society
external identifiers
  • scopus:85163300269
ISSN
2469-9950
DOI
10.1103/PhysRevB.107.224103
language
English
LU publication?
yes
id
92f4b03e-587d-4f7a-80b0-3c8fddb2e9a9
date added to LUP
2023-09-15 14:22:59
date last changed
2023-09-15 14:22:59
@article{92f4b03e-587d-4f7a-80b0-3c8fddb2e9a9,
  abstract     = {{<p>We show that in contrast to the conventional view of a mean-field Landau-type behavior, the oxygen octahedral tilt (R) and polarization (P) in the A3B2O7 Ruddlesden-Popper hybrid improper ferroelectric (Ca,Sr)3Ti2O7 exhibits the scaling behavior of a 2D Ising class near the para-to-ferroelectric transition temperature (Tc). We also show that P exhibits an additional transition from a 2D Ising to a 3D mean-field critical behavior at a temperature Td&lt;Tc, which is driven by enhanced interlayer dipolar correlations due to an increase in the ferroelectrically active B-site centered dipoles.</p>}},
  author       = {{Kong, Jing and Manjón-Sanz, Alicia and Liu, Jue and Marlton, Frederick and Lo, Tsz Wing and Lei, Dangyuan and Jørgensen, Mads Ry Vogel and Pramanick, Abhijit}},
  issn         = {{2469-9950}},
  language     = {{eng}},
  number       = {{22}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B}},
  title        = {{Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca,Sr)3Ti2 O7}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.107.224103}},
  doi          = {{10.1103/PhysRevB.107.224103}},
  volume       = {{107}},
  year         = {{2023}},
}