Projects per year
Doping ferroelectrics with carriers is often detrimental to polarization. This makes the design and discovery of metals that undergo a ferroelectriclike transition challenging. In this Letter, we show from first principles that the oxygen octahedral rotations in perovskites are often enhanced by electron doping, and this can be used as a means to strengthen the structural polarization in certain hybrid-improper ferroelectrics - compounds in which the polarization is not stabilized by the long-range Coulomb interactions but is instead induced by a trilinear coupling to octahedral rotations. We use this design strategy to predict a cation ordered Ruddlesden-Popper compound that can be driven into a metallic ferroelectriclike phase via electrolyte gating.
Bibliographical noteFunding Information:
We acknowledge helpful suggestions of an anonymous referee for the discussion about . This work was supported primarily by the National Science Foundation through the University of Minnesota MRSEC under Grant No. DMR-2011401. We acknowledge the Minnesota Supercomputing Institute (MSI) at the University of Minnesota for providing resources that contributed to the research results reported within this Letter.
© 2021 American Physical Society.
How much support was provided by MRSEC?
Reporting period for MRSEC
- Period 2
PubMed: MeSH publication types
- Journal Article
FingerprintDive into the research topics of 'Free-Carrier-Induced Ferroelectricity in Layered Perovskites'. Together they form a unique fingerprint.
- 1 Active
9/1/20 → 8/31/26
Project: Research project