title: Magnetic neutron scattering study of YVO3: evidence for an orbital Peierls state.
abstract: Neutron spectroscopy has revealed a highly unusual magnetic structure and dynamics in YVO3, an insulating pseudocubic perovskite that undergoes a series of temperature-induced phase transitions between states with different spin and orbital ordering patterns. A good description of the neutron data is obtained by a theoretical analysis of the spin and orbital correlations of a quasi-one-dimensional model. This leads to the tentative identification of one of the phases of YVO3 with the "orbital Peierls state," a theoretically proposed many-body state comprised of orbital singlet bonds.
authors.affiliation: Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Ulrich
authors.forename: G
authors.initials: G
authors.lastname: Khaliullin
authors.forename: J
authors.initials: J
authors.lastname: Sirker
authors.forename: M
authors.initials: M
authors.lastname: Reehuis
authors.forename: M
authors.initials: M
authors.lastname: Ohl
authors.forename: S
authors.initials: S
authors.lastname: Miyasaka
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura
authors.forename: B
authors.initials: B
authors.lastname: Keimer