Ferroelectricity induced by cooperative orbital ordering and Peierls instability

Abstract

A general mechanism by which orbital ordering, coupled to Peierls-like lattice distortions, can induce an electronic switchable polarization is discussed within a model Hamiltonian approach in the context of the modern theory of polarization. By using a Berry-phase approach, a clear picture emerges in terms of Wannier-function centers and orbital occupancies. The proposed mechanism may apply to oxide spinels whose electronic structure has effective one-dimensional character, such as CdV${}_2$O${}_4$, recently proposed to display multiferroic behaviour.

References in corpus (4)

• Spin current and magneto-electric effect in non-collinear magnets
• CdV2O4: A rare example of a collinear multiferroic spinel
• Homopolar bond formation in ZnV${}_2$O${}_4$ close to a metal-insulator transition
• Ferroelectricity due to orbital ordering in E-type undoped rare-earth manganites

Cited by in corpus (7)

• Comparative study of the high-pressure behavior of ZnV2O6, Zn2V2O7, and Zn3V2O8
• Polar Dynamics at the Jahn-Teller Transition in Ferroelectric GaV4S8
• Polar and magnetic order in GaV4Se8
• Mechanisms and origin of multiferroicity
• Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo${}_4$S${}_8$
• Double-exchange theory of ferroelectric polarization in orthorhombic manganites with twofold periodic magnetic texture
• Optical, dielectric, and magnetoelectric properties of ferroelectric and antiferroelectric lacunar spinels