Orbital fluctuations in ground state of YTiO3: 47,49Ti NMR study

Takashi Kiyama, Hajime Saitoh, Masayuki Itoh, Katsuaki Kodama, Hirohiko Ichikawa, Jun Akimitsu

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1123-1126
Number of pages4
Journaljournal of the physical society of japan
Volume74
Issue number4
DOIs
Publication statusPublished - Apr 1 2005
Externally publishedYes

Keywords

  • NMR
  • Orbital ordering
  • Quantum orbital fluctuation
  • YTiO

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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