Scholars@Duke

La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity

Publication ,  Journal Article
Kumah, DP; Yacoby, Y; Pauli, SA; Willmott, PR; Clarke, R
Published in: APL Materials
January 1, 2013
Published version (DOI)

We demonstrate a route to manipulate the polarization and internal electric field of a complex oxide heterostructure using a layering sequence based on the LaAlO3-SrTiO3 interface. By combining sensitive atomic-level mapping of the structure using direct x-ray phase-retrieval methods with theoretical modeling of the electrostatic charge and polarization, we have devised a novel single-domain polar heterostructure. We find that ionic rearrangement results in strain and free energy minimization, and eliminates the polarization discontinuity leading to a two-fold increase of the spontaneous polarization towards the surface of an ultra-thin single-domain BaTiO 3 film. © 2013 Author(s).

Duke Scholars

Divine P Kumah
Author Divine P Kumah Physics

Published In

APL Materials

DOI

10.1063/1.4849735

EISSN

2166-532X

Publication Date

January 1, 2013

Volume

1

Issue

6

Related Subject Headings

  • 5104 Condensed matter physics
  • 4018 Nanotechnology
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0906 Electrical and Electronic Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Kumah, D. P., Yacoby, Y., Pauli, S. A., Willmott, P. R., & Clarke, R. (2013). La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity. APL Materials, 1(6). https://doi.org/10.1063/1.4849735
Kumah, D. P., Y. Yacoby, S. A. Pauli, P. R. Willmott, and R. Clarke. “La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity.” APL Materials 1, no. 6 (January 1, 2013). https://doi.org/10.1063/1.4849735.
Kumah DP, Yacoby Y, Pauli SA, Willmott PR, Clarke R. La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity. APL Materials. 2013 Jan 1;1(6).
Kumah, D. P., et al. “La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity.” APL Materials, vol. 1, no. 6, Jan. 2013. Scopus, doi:10.1063/1.4849735.
Kumah DP, Yacoby Y, Pauli SA, Willmott PR, Clarke R. La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity. APL Materials. 2013 Jan 1;1(6).

Published In

APL Materials

DOI

10.1063/1.4849735

EISSN

2166-532X

Publication Date

January 1, 2013

Volume

1

Issue

6

Related Subject Headings

  • 5104 Condensed matter physics
  • 4018 Nanotechnology
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0906 Electrical and Electronic Engineering