title: Ferroelectric phases in a chiral bent-core smectic liquid crystal: dielectric and optical second-harmonic generation measurements
abstract: We report unambiguous evidence for ferroelectricity in a chiral bent-core liquid crystal. This evidence includes (i) a single current peak in the polarization reversal current, (ii) a strong dielectric response that is suppressed by applying a bias electric field, and (iii) strong optical second-harmonic generation in the absence of electric field even at normal incidence. We propose a phase structure that is anticlinic in tilt and ferroelectric in polar order, i.e., smectic-C(A)P(*)(F).
authors.affiliation: Department of Chemistry, Warsaw University, Zwirki i Wigury 101, 02-089 Warsaw, Poland.
authors.initials: E
authors.lastname: Gorecka
authors.initials: D
authors.lastname: Pociecha
authors.initials: F
authors.lastname: Araoka
authors.initials: DR
authors.lastname: Link
authors.initials: M
authors.lastname: Nakata
authors.initials: J
authors.lastname: Thisayukta
authors.initials: Y
authors.lastname: Takanishi
authors.initials: K
authors.lastname: Ishikawa
authors.initials: J
authors.lastname: Watanabe
authors.initials: H
authors.lastname: Takezoe