47,49Ti NMR spectra of a single crystal of YTiO3 have been obtained at 1.5 K in the ferromagnetically ordered state under an external field of 3 T. With rotation of the sample in the magnetic field, the spectra show a characteristic angle dependence which reflects Ti 3d orbital ordering. The observed spectra indicate that the Ti 3d quadrupole moment is markedly reduced from that predicted by the orbital ordering model based on the Hartree-Fock and GGA band calculations. The reduction of the quadrupole moment is considered to originate from quantum fluctuations in the t2g orbital states, taking into account that the effective spin-orbit interaction and itinerancy are not strong in this compound.
|Number of pages||4|
|Journal||journal of the physical society of japan|
|Publication status||Published - Apr 2005|
- Orbital ordering
- Quantum orbital fluctuation
ASJC Scopus subject areas
- Physics and Astronomy(all)