Barman, S. R. ; Chainani, A. ; Sarma, D. D. (1994) Covalency-driven unusual metal-insulator transition in nickelates Physical Review B: Condensed Matter and Materials Physics, 49 (12). pp. 8475-8478. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v49/i12/p8475_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.49.8475
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 Δ 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46237 |
| Deposited On: | 02 Jul 2011 13:53 |
| Last Modified: | 25 Jun 2012 07:26 |
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