Magnetic neutron scattering study of YVO3: evidence for an orbital Peierls state.
Phys Rev Lett
; 91(25): 257202, 2003 Dec 19.
Article
em En
| MEDLINE
| ID: mdl-14754146
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.
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MEDLINE
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En
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Phys Rev Lett
Ano de publicação:
2003
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Article
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Alemanha