title: Observation of a near-surface structural phase transition in SrTiO3 by optical second harmonic generation
abstract: A near-surface structural phase transition on a SrTiO3 single crystal, occurring at T(*) about 45 K above the bulk cubic-to-tetragonal transition, is observed by means of optical second harmonic generation. The temperature dependence of the second harmonic field in the vicinity of T(*) is described with a phenomenological Landau-type model.
authors.affiliation: Moscow Institute of Radioengineering, Electronics and Automation, Moscow 117454, Russia.
authors.initials: ED
authors.lastname: Mishina
authors.initials: TV
authors.lastname: Misuryaev
authors.initials: NE
authors.lastname: Sherstyuk
authors.initials: VV
authors.lastname: Lemanov
authors.initials: AI
authors.lastname: Morozov
authors.initials: AS
authors.lastname: Sigov
authors.initials: T
authors.lastname: Rasing