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Orbital Ordering in ferromagnetic Lu2V2O7

H. Ichikawa·L. Kano·M. Saitoh·S. Miyahara·N. Furukawa·J. Akimitsu·T. Yokoo·T. Matsumura·M. Takeda·K. Hirota
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Abstract

We have observed the orbital ordering in the ferromagnetic Mott-insulator Lu2V2O7 by the polarized neutron diffraction technique. The orbital ordering pattern determined from the observed magnetic form factors can be explained in terms of a linear combination of wave functions |yz>, |zx> and |xy>; |0> = (1/3)^(1/2) |xy> + (1/3)^(1/2)|yz> + (1/3)^(1/2) |zx> which is proportional to |(x + y + z)^2 - r^2>; where each orbital is extended toward the center-of-mass of the V tetrahedron. We discuss the stability of the ferromagnetic Lu2V2O7, using a Hubbard Hamiltonian with these three orbitals.

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H. Ichikawa, L. Kano, M. Saitoh, S. Miyahara, N. Furukawa, J. Akimitsu, T. Yokoo, T. Matsumura, M. Takeda, K. Hirota. 2005-02-01. Orbital Ordering in ferromagnetic Lu2V2O7. https://doi.org/10.1143/jpsj.74.1020

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