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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 1999

Electronic-structure evolution through the metal-insulator transition in RNiO3

Résumé

We performed a photoemission investigation of the electronic structure of PrNiO3 and NdNiO3 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-MI) and magnetic (T-Neel) transition temperatures. This is in contrast with the behavior in SmNiO3 and EuNiO3, where the two transitions are separate. The spectral properties clearly indicate two distinct regimes for RNiO3 with T-MI = T-Neel and T-MI > T-Neel.
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Dates et versions

hal-02194579 , version 1 (25-07-2019)

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I. Vobornik, L. Perfetti, M. Zacchigna, M. Grioni, G. Margaritondo, et al.. Electronic-structure evolution through the metal-insulator transition in RNiO3. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 1999, 60 (12), pp.R8426-R8429. ⟨10.1103/PhysRevB.60.R8426⟩. ⟨hal-02194579⟩

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