Orbital and Spin Chains in ZnV2O4 |
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| Authors: | Lee S-H Louca D Ueda H Park S Sato T J Isobe M Ueda Y Rosenkranz S Zschack P Iñiguez J Qiu Y Osborn R |
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| Institution: | NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. |
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| Abstract: | Our powder inelastic neutron scattering data indicate that ZnV2O4 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 V3+ (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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