Electronic structure of possible nickelate analogs to the cuprates

V. I. Anisimov

Research output: Contribution to journalArticlepeer-review

192 Citations (Scopus)

Abstract

The electronic structure of various nickel oxides with nickel valence varying from 1+ to 3+ was investigated with the aim to find similarities and differences to the isoelectronic cuprates. Only if the Ni ions are forced into a planar coordination with the O ions can a (Formula presented) magnetic insulator be realized with the difficult (Formula presented) oxidation state and possibly doped with low spin (Formula presented) holes directly analogous to the superconducting cuprates. The more common (Formula presented) oxidation state cannot be used to make a parent magnetic insulator as it forms rather as localized (Formula presented) embedded in a sea of itinerant O holes. Strong coupling of these holes to the localized spins via (Formula presented) hybridization leads to a heavy-fermion system with a large Kondo temperature, which was confirmed experimentally for (Formula presented)

Original languageEnglish
Pages (from-to)7901-7906
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number12
DOIs
Publication statusPublished - 1999
Externally publishedYes

Fingerprint

Dive into the research topics of 'Electronic structure of possible nickelate analogs to the cuprates'. Together they form a unique fingerprint.

Cite this