Magnetic neutron scattering study of YVO3:: Evidence for an orbital Peierls state -: art. no. 257202

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.