期刊论文详细信息
Electronic-structure evolution through the metal-insulator transition in RNiO3
Article
关键词: PEROVSKITES;    PRNIO3;    PHOTOEMISSION;    SPECTROSCOPY;    NDNIO3;    STATE;    GAP;    ND;   
DOI  :  10.1103/PhysRevB.60.R8426
来源: SCIE
【 摘 要 】

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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