Orbital and spin chains in ZnV2O4

Details Orbital and spin chains in ZnV2O4 Orbital and spin chains in ZnV2O4

2003-12-21

arxiv.org/abs/cond-mat/0312558v3

Phys. Rev. Lett. Vol. 93, 156407 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.93.156407

Our powder inelastic neutron scattering data indicate that \zvo is a system of spin chains that are three dimensionally tangled in the cubic phase above 50 K due to randomly occupied $t_{2g}$ orbitals of V$^{3+}$ ($3d^2$) ions. Below 50 K in the tetragonal phase, the chains become straight due to antiferro-orbital ordering. This is evidenced by the characteristic wave vector dependence of the magnetic structure factor that changes from symmetric to asymmetric at the cubic-to-tetragonal transition.

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