In a spin-orbital superexchange model for e_g^3 systems, the quasiparticle band of a doped hole is nearly dispersionless for the Kugel-Khomskii orbital phase (phi=pi/6) and strongly dispersive for the phi=0 phase, offering a spectral fingerprint of orbital order.
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Spectral properties of spin-orbital polarons as a fingerprint of orbital order
In a spin-orbital superexchange model for e_g^3 systems, the quasiparticle band of a doped hole is nearly dispersionless for the Kugel-Khomskii orbital phase (phi=pi/6) and strongly dispersive for the phi=0 phase, offering a spectral fingerprint of orbital order.