title: Controlling toroidal moment by means of an inhomogeneous static field: an ab initio study.
abstract: A first-principles-based approach is used to show (i) that stress-free ferroelectric nanodots under open-circuit-like electrical boundary conditions maintain a vortex structure for their local dipoles when subject to a transverse inhomogeneous static electric field, and, more importantly, (ii) that such a field leads to the solution of a fundamental and technological challenge: namely, the efficient control of the direction of the macroscopic toroidal moment. The effects responsible for such striking features are revealed and discussed.
authors.affiliation: Physics Department, University of Arkansas, Fayetteville, Arkansas 72701, USA and Rostov State University, Rostov on Don, 344090, Russia.
authors.forename: S
authors.initials: S
authors.lastname: Prosandeev
authors.forename: I
authors.initials: I
authors.lastname: Ponomareva
authors.forename: I
authors.initials: I
authors.lastname: Kornev
authors.forename: I
authors.initials: I
authors.lastname: Naumov
authors.forename: L
authors.initials: L
authors.lastname: Bellaiche