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)


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
Issue number12
Publication statusPublished - 1994 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


Dive into the research topics of 'Covalency-driven unusual metal-insulator transition in nickelates'. Together they form a unique fingerprint.

Cite this