Optical spectroscopy of the metal-insulator transition in NdNiO3

T. Katsufuji*, Y. Okimoto, T. Arima, Y. Tokura, J. B. Torrance

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)


We report optical measurements of NdNiO3 that undergo a phase transition from a paramagnetic metal to an antiferromagnetic insulator at 200 K (=Tc). The opening of a charge gap is observed in the optical conductivity spectrum [σ(ω)] below Tc, and the missing spectral weight is distributed over the energy region above 0.3 eV. The evolution of the gap below Tc is rather gradual with temperature, in contrast to sharp changes of lattice parameters and resistivity at Tc. Such a feature in the σ(ω) spectrum of NdNiO3 is characteristic of a spin-density-wave (SDW) state, though the peak energy (∼0.4 eV) of the σ(ω) spectrum is considerably larger than that predicted by a simple SDW theory. The effect of electron correlation is discussed on the basis of the σ(ω) spectra.

Original languageEnglish
Pages (from-to)4830-4835
Number of pages6
JournalPhysical Review B
Issue number8
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


Dive into the research topics of 'Optical spectroscopy of the metal-insulator transition in NdNiO3'. Together they form a unique fingerprint.

Cite this