Temperature-dependent electronic structure of Nd1-xSmxNiO3

K. Okazaki, Takashi Mizokawa, A. Fujimori, E. V. Sampathkumaran, J. A. Alonso

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

RNiO3 (R: rare earth) is one of the typical bandwidth-control metal-insulator transition systems. Its metal-insulator transition temperature (TMI) is the same as the antiferromagnetic transition temperature (TN) for R = Pr and Nd, while TMI is higher than TN for R = Sm and Eu. The boundary between the two types of phase transitions is located between NdNiO3 and SmNiO3. We have measured photoemission spectra of Nd1-xSmxNiO3 at various temperatures above and below TMI. The spectra show quite different temperature dependences between x ≤ 0.4 and x ≥ 0.6. For x ≤ 0.4, the spectral intensity near the Fermi level (EF) is temperature-dependent even well below TMI, while for x ≥ 0.6 it shows a significant temperature dependence only near TMI. Also, the spectra near EF above TMI show a pseudo-gap like behavior for x ≥ 0.6. From these results, we conclude that the metallic phase has different natures between x ≤ 0.4 and x ≥ 0.6.

Original languageEnglish
Pages (from-to)975-978
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume63
Issue number6-8
DOIs
Publication statusPublished - 2002 Jun
Externally publishedYes

Fingerprint

Electronic structure
transition temperature
Superconducting transition temperature
electronic structure
Metal insulator transition
insulators
temperature dependence
metals
Temperature
temperature
Photoemission
photoelectric emission
rare earth elements
Fermi level
Rare earths
bandwidth
Phase transitions
Bandwidth

Keywords

  • A. Oxides
  • C. Photoelectron spectroscopy
  • D. Electronic structure
  • D. Phase transitions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Temperature-dependent electronic structure of Nd1-xSmxNiO3. / Okazaki, K.; Mizokawa, Takashi; Fujimori, A.; Sampathkumaran, E. V.; Alonso, J. A.

In: Journal of Physics and Chemistry of Solids, Vol. 63, No. 6-8, 06.2002, p. 975-978.

Research output: Contribution to journalArticle

Okazaki, K. ; Mizokawa, Takashi ; Fujimori, A. ; Sampathkumaran, E. V. ; Alonso, J. A. / Temperature-dependent electronic structure of Nd1-xSmxNiO3. In: Journal of Physics and Chemistry of Solids. 2002 ; Vol. 63, No. 6-8. pp. 975-978.
@article{026329bab6604d959028461889a76926,
title = "Temperature-dependent electronic structure of Nd1-xSmxNiO3",
abstract = "RNiO3 (R: rare earth) is one of the typical bandwidth-control metal-insulator transition systems. Its metal-insulator transition temperature (TMI) is the same as the antiferromagnetic transition temperature (TN) for R = Pr and Nd, while TMI is higher than TN for R = Sm and Eu. The boundary between the two types of phase transitions is located between NdNiO3 and SmNiO3. We have measured photoemission spectra of Nd1-xSmxNiO3 at various temperatures above and below TMI. The spectra show quite different temperature dependences between x ≤ 0.4 and x ≥ 0.6. For x ≤ 0.4, the spectral intensity near the Fermi level (EF) is temperature-dependent even well below TMI, while for x ≥ 0.6 it shows a significant temperature dependence only near TMI. Also, the spectra near EF above TMI show a pseudo-gap like behavior for x ≥ 0.6. From these results, we conclude that the metallic phase has different natures between x ≤ 0.4 and x ≥ 0.6.",
keywords = "A. Oxides, C. Photoelectron spectroscopy, D. Electronic structure, D. Phase transitions",
author = "K. Okazaki and Takashi Mizokawa and A. Fujimori and Sampathkumaran, {E. V.} and Alonso, {J. A.}",
year = "2002",
month = "6",
doi = "10.1016/S0022-3697(02)00031-8",
language = "English",
volume = "63",
pages = "975--978",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "6-8",

}

TY - JOUR

T1 - Temperature-dependent electronic structure of Nd1-xSmxNiO3

AU - Okazaki, K.

AU - Mizokawa, Takashi

AU - Fujimori, A.

AU - Sampathkumaran, E. V.

AU - Alonso, J. A.

PY - 2002/6

Y1 - 2002/6

N2 - RNiO3 (R: rare earth) is one of the typical bandwidth-control metal-insulator transition systems. Its metal-insulator transition temperature (TMI) is the same as the antiferromagnetic transition temperature (TN) for R = Pr and Nd, while TMI is higher than TN for R = Sm and Eu. The boundary between the two types of phase transitions is located between NdNiO3 and SmNiO3. We have measured photoemission spectra of Nd1-xSmxNiO3 at various temperatures above and below TMI. The spectra show quite different temperature dependences between x ≤ 0.4 and x ≥ 0.6. For x ≤ 0.4, the spectral intensity near the Fermi level (EF) is temperature-dependent even well below TMI, while for x ≥ 0.6 it shows a significant temperature dependence only near TMI. Also, the spectra near EF above TMI show a pseudo-gap like behavior for x ≥ 0.6. From these results, we conclude that the metallic phase has different natures between x ≤ 0.4 and x ≥ 0.6.

AB - RNiO3 (R: rare earth) is one of the typical bandwidth-control metal-insulator transition systems. Its metal-insulator transition temperature (TMI) is the same as the antiferromagnetic transition temperature (TN) for R = Pr and Nd, while TMI is higher than TN for R = Sm and Eu. The boundary between the two types of phase transitions is located between NdNiO3 and SmNiO3. We have measured photoemission spectra of Nd1-xSmxNiO3 at various temperatures above and below TMI. The spectra show quite different temperature dependences between x ≤ 0.4 and x ≥ 0.6. For x ≤ 0.4, the spectral intensity near the Fermi level (EF) is temperature-dependent even well below TMI, while for x ≥ 0.6 it shows a significant temperature dependence only near TMI. Also, the spectra near EF above TMI show a pseudo-gap like behavior for x ≥ 0.6. From these results, we conclude that the metallic phase has different natures between x ≤ 0.4 and x ≥ 0.6.

KW - A. Oxides

KW - C. Photoelectron spectroscopy

KW - D. Electronic structure

KW - D. Phase transitions

UR - http://www.scopus.com/inward/record.url?scp=0036601675&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036601675&partnerID=8YFLogxK

U2 - 10.1016/S0022-3697(02)00031-8

DO - 10.1016/S0022-3697(02)00031-8

M3 - Article

AN - SCOPUS:0036601675

VL - 63

SP - 975

EP - 978

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 6-8

ER -