Hole dynamics in spin and orbital ordered vanadium perovskites

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A theory of doped perovskite vanadates with spin and orbital orders is presented. Mobile holes are strongly renormalized by spin excitations (magnons) in the spin G-type and orbital C-type (SG-OC) order, and orbital excitations (orbitons) in the spin C-type and orbital G-type (SC-OG) one. Hole dynamics in a staggered t2g orbital array is distinguished from that in the antiferromagnetic order and the eg orbital one. The fragile character of the (SG-OC) order in Y1-xCaxVO3 is attributed to the orbiton softening induced by a reduction of the spin order parameter.

Original languageEnglish
Article number156408
JournalPhysical Review Letters
Issue number15
Publication statusPublished - 2005 Apr 22

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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