Covalency-driven unusual metal-insulator transition in nickelates

S. R. Barman, Ashish Atma Chainani, D. D. Sarma

Research output: Contribution to journalArticlepeer-review

95 Citations (Scopus)

Abstract

Electronic structures of metallic LaNiO3 and insulating NdNiO3 are investigated using electron spectroscopies as well as band-structure and model-Hamiltonian calculations. It is shown that there is an increase in the transfer integral, tpd in LaNiO3 compared to NdNiO3 though Udd and are very similar. A phase diagram obtained with a multiband Hubbard model explains the metal-insulator transition as well as the anomalous resistivity of NdNiO3 under pressure while indicating various interesting possibilities near the metal-insulator phase line.

Original languageEnglish
Pages (from-to)8475-8478
Number of pages4
JournalPhysical Review B
Volume49
Issue number12
DOIs
Publication statusPublished - 1994 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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