Magnetic Neutron Scattering Study of YVO3 : Evidence for an Orbital Peierls State

作者：C. Ulrich, Giniyat Khaliullin, Jesko Sirker, M. Reehuis, Michael Ohl, S. Miyasaka, Y. Tokura, B. Keimer · 发表于：Physical Review Letters · 年份：2003 · DOI：10.1103/physrevlett.91.257202 · 被引用次数：154 · 研究领域：Magnetic and transport properties of perovskites and related materials、Advanced Condensed Matter Physics、High-pressure geophysics and materials

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.