Optical spectroscopy of the metal-insulator transition in NdNiO3

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

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

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
Volume51
Issue number8
DOIs
Publication statusPublished - 1995
Externally publishedYes

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Spin density waves
Metal insulator transition
insulators
Optical conductivity
Electron correlations
metals
spectroscopy
Lattice constants
Phase transitions
Metals
optical measurement
lattice parameters
conductivity
Temperature
electrical resistivity
Optical spectroscopy
energy
electrons
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Optical spectroscopy of the metal-insulator transition in NdNiO3. / Katsufuji, Takuro; Okimoto, Y.; Arima, T.; Tokura, Y.; Torrance, J. B.

In: Physical Review B, Vol. 51, No. 8, 1995, p. 4830-4835.

Research output: Contribution to journalArticle

Katsufuji, T, Okimoto, Y, Arima, T, Tokura, Y & Torrance, JB 1995, 'Optical spectroscopy of the metal-insulator transition in NdNiO3', Physical Review B, vol. 51, no. 8, pp. 4830-4835. https://doi.org/10.1103/PhysRevB.51.4830
Katsufuji, Takuro ; Okimoto, Y. ; Arima, T. ; Tokura, Y. ; Torrance, J. B. / Optical spectroscopy of the metal-insulator transition in NdNiO3. In: Physical Review B. 1995 ; Vol. 51, No. 8. pp. 4830-4835.
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