Elementary excitations in magnetically ordered systems with orbital degeneracy

Article

关键词: INSULATING PHASE;    SPIN SYSTEMS;    V2O3;    MODEL;    TRANSITION;   

DOI  :  10.1103/PhysRevB.60.6584

来源: SCIE

【 摘 要 】

The generalized Holstein-Primakoff transformation is used to develop a quantum flavor wave theory for spin systems with orbital degeneracy. Elementary excitations of ordered ground states consist of spin, orbital, and spin-orbital waves. Spin and spin-orbital waves couple to each other due to orbital anisotropy and Hund's rule, resulting in modes observable by inelastic neutron scattering. In the SU(4) limit, flavor waves are dispersionless along one or more directions, and give rise to quantum fluctuations of reduced dimensionality. [S0163-1829(99)10529-0].

【 授权许可】

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