Crossover in the nature of the metallic phases in the perovskite-type RNiO3

K. Okazaki, Takashi Mizokawa, A. Fujimori, E. V. Sampathkumaran, M. J. Martinez-Lope, J. A. Alonso

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We have measured the photoemission spectra of Nd1-xSmxNiO3, where the metal-insulator transition and the Néel ordering occur at the same temperature for x≲0.4 and the metal-insulator transition temperature (TMI) is higher than the Néel temperature for x≳0.4. For x≤0.4, the spectral intensity at the Fermi level is high in the metallic phase above TMI and gradually decreases with cooling in the insulating phase below TMI while for x>0.4 it shows a pseudogaplike behavior above TMI and further diminishes below TMI. The results clearly establish that there is a change in the nature of the electronic correlations in the middle (x∼0.4) of the metallic phase of the RNiO3 system.

Original languageEnglish
Article number073101
Pages (from-to)731011-731014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number7
Publication statusPublished - 2003 Feb 15
Externally publishedYes

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Metal insulator transition
Perovskite
crossovers
insulators
Photoemission
Fermi level
metals
Superconducting transition temperature
photoelectric emission
transition temperature
Cooling
cooling
Temperature
temperature
electronics
perovskite

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Okazaki, K., Mizokawa, T., Fujimori, A., Sampathkumaran, E. V., Martinez-Lope, M. J., & Alonso, J. A. (2003). Crossover in the nature of the metallic phases in the perovskite-type RNiO3. Physical Review B - Condensed Matter and Materials Physics, 67(7), 731011-731014. [073101].

Crossover in the nature of the metallic phases in the perovskite-type RNiO3. / Okazaki, K.; Mizokawa, Takashi; Fujimori, A.; Sampathkumaran, E. V.; Martinez-Lope, M. J.; Alonso, J. A.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 7, 073101, 15.02.2003, p. 731011-731014.

Research output: Contribution to journalArticle

Okazaki, K, Mizokawa, T, Fujimori, A, Sampathkumaran, EV, Martinez-Lope, MJ & Alonso, JA 2003, 'Crossover in the nature of the metallic phases in the perovskite-type RNiO3', Physical Review B - Condensed Matter and Materials Physics, vol. 67, no. 7, 073101, pp. 731011-731014.
Okazaki K, Mizokawa T, Fujimori A, Sampathkumaran EV, Martinez-Lope MJ, Alonso JA. Crossover in the nature of the metallic phases in the perovskite-type RNiO3. Physical Review B - Condensed Matter and Materials Physics. 2003 Feb 15;67(7):731011-731014. 073101.
Okazaki, K. ; Mizokawa, Takashi ; Fujimori, A. ; Sampathkumaran, E. V. ; Martinez-Lope, M. J. ; Alonso, J. A. / Crossover in the nature of the metallic phases in the perovskite-type RNiO3. In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 67, No. 7. pp. 731011-731014.
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