Electronic-structure evolution through the metal-insulator transition in RNiO{sub 3}

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.R8426· OSTI ID:686557

Vobornik, I; Perfetti, L; Zacchigna, M; Grioni, M; Margaritondo, G ^[1]; Mesot, J; Medarde, M ^[2]; Lacorre, P ^[3]

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1. Institut de Physique Appliquee, Ecole Polytechnique Federale, CH-1015 Lausanne (Switzerland)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439-4845 (United States)
3. Laboratoire des Fluorures, UPRES-A CNRS 6010, Universite du Maine, F-72017 Le Mans Cedex 9 (France)

We performed a photoemission investigation of the electronic structure of PrNiO{sub 3} and NdNiO{sub 3} through the first order (paramagnetic) metal to (antiferromagnetic) insulator transition. Surprisingly, the data reveal a temperature-dependent loss of spectral weight near the chemical potential, which extends well below the coincident metal-insulator (T{sub MI}) and magnetic (T{sub N{acute e}el}) transition temperatures. This is in contrast with the behavior in SmNiO{sub 3} and EuNiO{sub 3}, where the two transitions are separate. The spectral properties clearly indicate two distinct regimes for RNiO{sub 3} with T{sub MI}=T{sub N{acute e}el} and T{sub MI}{gt}T{sub N{acute e}el}. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 686557
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 12 Vol. 60; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRIC CONDUCTIVITY
ELECTRONIC STRUCTURE
EUROPIUM OXIDES
MAGNETIC PROPERTIES
NEEL TEMPERATURE
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
NICKEL OXIDES
NICKELATES
PHOTOEMISSION
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
SAMARIUM OXIDES