Two inequivalent sublattices and orbital ordering in MnV2O4 studied by 51V NMR

Abstract

We report detailed 51V NMR spectra in a single crystal of MnV2O4. The vanadium spectrum reveals two peaks in the orbitally ordered state, which arise from different internal hyperfine fields at two different V sublattices. These internal fields evolve smoothly with externally applied field, and show no change in structure that would suggest a change of the orbital ordering. The result is consistent with the orbital ordering model recently proposed by Sarkar et al. [Phys. Rev. Lett. 102, 216405 (2009)] in which the same orbital that is a mixture of t_2g orbitals rotates by about 45${}^{\circ }$ alternately within and between orbital chains in the I4_1/a tetragonal space group.

arXiv comment4 pages, 4 figures, title changed, published in PRB as a rapid comm

References in corpus (6)

• Magnetic and orbital ordering in the spinel MnV2O4
• Structural, orbital, and magnetic order in vanadium spinels
• Magnetic transition and orbital degrees of freedom in vanadium spinels
• Proposed Orbital Ordering in MnV2O4 from First-principles Calculations
• Orbital order in vanadium spinels
• AC susceptibility and ${}^{51}$V NMR study of MnV${}_2$O${}_4$

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