title: Solitonic Spin-Liquid State Due to the Violation of the Lifshitz Condition in Fe(1+y)Te.
abstract: A combination of phenomenological analysis and Mössbauer spectroscopy experiments on the tetragonal Fe(1+y)Te system indicates that the magnetic ordering transition in compounds with higher Fe excess, y≥0.11, is unconventional. Experimentally, a liquidlike magnetic precursor with quasistatic spin order is found from significantly broadened Mössbauer spectra at temperatures above the antiferromagnetic transition. The incommensurate spin-density wave order in Fe(1+y)Te is described by a magnetic free energy that violates the weak Lifshitz condition in the Landau theory of second-order transitions. The presence of multiple Lifshitz invariants provides the mechanism to create multidimensional, twisted, and modulated solitonic phases.
authors.affiliation: Institut für Festkörperphysik, Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: Ph
authors.initials: P
authors.lastname: Materne
authors.affiliation: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straß e 40, 01187 Dresden, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Koz
authors.affiliation: IFW Dresden, Postfach 270016, 01171 Dresden, Germany.
authors.forename: U K
authors.initials: UK
authors.lastname: Rössler
authors.affiliation: Institut für Festkörperphysik, Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Doerr
authors.affiliation: Institut für Festkörperphysik, Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Goltz
authors.affiliation: Institut für Festkörperphysik, Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: H H
authors.initials: HH
authors.lastname: Klauss
authors.affiliation: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straß e 40, 01187 Dresden, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Schwarz
authors.affiliation: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straß e 40, 01187 Dresden, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Wirth
authors.affiliation: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straß e 40, 01187 Dresden, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Rössler