Electronic-structure evolution through the metal-insulator transition in RENiO{sub 3}.
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 Neel}) 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 Neel} and T{sub MI}>T{sub Neel}.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 942670
- Report Number(s):
- ANL/MSD/JA-33644; TRN: US200920%%116
- Journal Information:
- Phys. Rev. B, Vol. 60, Issue 12 ; Sep. 15, 1999; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- ENGLISH
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