Mott physics near the insulator-to-metal transition in NdNiO3

M. K. Stewart, Jian Liu, M. Kareev, J. Chakhalian, D. N. Basov

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73 Scopus citations

Abstract

An optical study of NdNiO3 ultrathin films with insulating and metallic ground states reveals new aspects of the insulator-to-metal transition that point to Mott physics as the driving force. In contrast with the behavior of charge-ordered systems, we find that the emergence of the Drude resonance across the transition is linked to a spectral weight transfer over an energy range of the order of the Coulomb repulsion U, as the energy gap is filled with states instead of closing continuously.

Original languageEnglish (US)
Article number176401
JournalPhysical review letters
Volume107
Issue number17
DOIs
StatePublished - Oct 17 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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