Abstract
Neutron spectroscopy has revealed a highly unusual magnetic structure and dynamics in , 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 with the “orbital Peierls state,” a theoretically proposed many-body state comprised of orbital singlet bonds.
- Received 26 November 2002
- Publisher error corrected 17 December 2003
DOI:https://doi.org/10.1103/PhysRevLett.91.257202
©2003 American Physical Society
Corrections
17 December 2003