title: Ferroelectricity in barium titanate quantum dots and wires.
abstract: Properties of BaTiO3 colloidal quantum dots and wires are simulated using a first-principles-based approach. Large atomic off-center displacements (that are robust against capping matrix materials) are found to exist in very small (<5 nm) dots. We further determine the size dependences of electrical and electromechanical responses in the studied nanostructures, as well as provide microscopic understanding of these responses.
authors.affiliation: Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA.
authors.forename: Huaxiang
authors.initials: H
authors.lastname: Fu
authors.forename: L
authors.initials: L
authors.lastname: Bellaiche