title: Complex Field-Induced States in Linarite PbCuSO4(OH)2 with a Variety of High-Order Exotic Spin-Density Wave States.
abstract: Low-temperature neutron diffraction and NMR studies of field-induced phases in linarite are presented for magnetic fields H∥b axis. A two-step spin-flop transition is observed, as well as a transition transforming a helical magnetic ground state into an unusual magnetic phase with sine-wave-modulated moments ∥H. An effective J[over ˜]_{1}-J[over ˜]_{2} single-chain model with a magnetization-dependent frustration ratio α_{eff}=-J[over ˜]_{2}/J[over ˜]_{1} is proposed. The latter is governed by skew interchain couplings and shifted to the vicinity of the ferromagnetic critical point. It explains qualitatively the observation of a rich variety of exotic longitudinal collinear spin-density wave, SDW_{p}, states (9≥p≥2).
authors.affiliation: Institute for Condensed Matter Physics, TU Braunschweig, D-38106 Braunschweig, Germany.|Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Willenberg
authors.affiliation: Leibniz Institute for Solid State and Materials Research IFW Dresden, D-01171 Dresden, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Schäpers
authors.affiliation: Leibniz Institute for Solid State and Materials Research IFW Dresden, D-01171 Dresden, Germany.
authors.forename: A U B
authors.initials: AU
authors.lastname: Wolter
authors.affiliation: Leibniz Institute for Solid State and Materials Research IFW Dresden, D-01171 Dresden, Germany.
authors.forename: S-L
authors.initials: SL
authors.lastname: Drechsler
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Reehuis
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany.
authors.forename: J-U
authors.initials: JU
authors.lastname: Hoffmann
authors.affiliation: Leibniz Institute for Solid State and Materials Research IFW Dresden, D-01171 Dresden, Germany.|Institut für Festkörperphysik, TU Dresden, D-01062 Dresden, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Büchner
authors.affiliation: The Bragg Institute, ANSTO, Kirrawee DC, New South Wales 2234, Australia.
authors.forename: A J
authors.initials: AJ
authors.lastname: Studer
authors.affiliation: The Bragg Institute, ANSTO, Kirrawee DC, New South Wales 2234, Australia.
authors.forename: K C
authors.initials: KC
authors.lastname: Rule
authors.affiliation: Institute Laue-Langevin, F-38042 Grenoble Cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Ouladdiaf
authors.affiliation: Institute for Condensed Matter Physics, TU Braunschweig, D-38106 Braunschweig, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Süllow
authors.affiliation: Leibniz Institute for Solid State and Materials Research IFW Dresden, D-01171 Dresden, Germany.|Institut für Festkörperphysik, TU Dresden, D-01062 Dresden, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Nishimoto