Electronic structure and metal-insulator transition in LaNiO 3-δ
作者： M. Abbate , G. Zampieri , F. Prado , A. Caneiro , J. M. Gonzalez-Calbet
DOI: 10.1103/PHYSREVB.65.155101
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摘要: We studied the changes in electronic structure of ${\mathrm{LaNiO}}_{3\ensuremath{-}\ensuremath{\delta}}$ across metal-insulator transition. The technique used study was mainly $\mathrm{O} 1s$ x-ray absorption spectroscopy (XAS). experimental spectrum ${\mathrm{LaNiO}}_{3.00}$ analyzed terms a cluster-model calculation. presents sharp peak at threshold that corresponds to ${3d}^{8}L\stackrel{\ensuremath{\rightarrow}}{}c{3d}^{9}$ transitions. Analysis this indicates charge carriers contain considerable oxygen character. intensity decreases ${\mathrm{LaNiO}}_{2.75}$ and disappears almost completely for ${\mathrm{LaNiO}}_{2.50}.$ This suggests transition is related disappearance ensuing band-gap opening. compound split due presence two nonequivalent crystallographic sites. tentatively attributed potential disorder between these
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sci-hub.se 参考文章(18)
P. Lacorre, J.B. Torrance, J. Pannetier, A.I. Nazzal, P.W. Wang, T.C. Huang, Synthesis, crystal structure, and properties of metallic PrNiO3: Comparison with metallic NdNiO3 and semiconducting SmNiO3 Journal of Solid State Chemistry. ,vol. 91, pp. 225- 237 ,(1991) , 10.1016/0022-4596(91)90077-U
J. Torrance, P. Lacorre, A. Nazzal, E. Ansaldo, Ch. Niedermayer, Systematic study of insulator-metal transitions in perovskites RNiO3 (R=Pr,Nd,Sm,Eu) due to closing of charge-transfer gap. Physical Review B. ,vol. 45, pp. 8209- 8212 ,(1992) , 10.1103/PHYSREVB.45.8209
J. L. García-Muñoz, J. Rodríguez-Carvajal, P. Lacorre, J. B. Torrance, Neutron-diffraction study of RNiO3 (R=La,Pr,Nd,Sm): Electronically induced structural changes across the metal-insulator transition. Physical Review B. ,vol. 46, pp. 4414- 4425 ,(1992) , 10.1103/PHYSREVB.46.4414
M. Medarde, A. Fontaine, J. L. García-Muñoz, J. Rodríguez-Carvajal, M. de Santis, M. Sacchi, G. Rossi, P. Lacorre, RNiO3 perovskites (R=Pr,Nd): Nickel valence and the metal-insulator transition investigated by x-ray-absorption spectroscopy. Physical Review B. ,vol. 46, pp. 14975- 14984 ,(1992) , 10.1103/PHYSREVB.46.14975
S. R. Barman, A. Chainani, D. D. Sarma, Covalency-driven unusual metal-insulator transition in nickelates Physical Review B. ,vol. 49, pp. 8475- 8478 ,(1994) , 10.1103/PHYSREVB.49.8475
T. Mizokawa, A. Fujimori, T. Arima, Y. Tokura, N. Mōri, J. Akimitsu, Electronic structure of PrNiO3 studied by photoemission and x-ray-absorption spectroscopy: Band gap and orbital ordering Physical Review B. ,vol. 52, pp. 13865- 13873 ,(1995) , 10.1103/PHYSREVB.52.13865
M Abbate, H Pen, MT Czyżyk, FMF De Groot, JC Fuggle, YJ Ma, CT Chen, F Sette, A Fujimori, Y Ueda, K Kosuge, None, Soft X-ray absorption spectroscopy of vanadium oxides Journal of Electron Spectroscopy and Related Phenomena. ,vol. 62, pp. 185- 195 ,(1993) , 10.1016/0368-2048(93)80014-D
M Abbate, FMF De Groot, JC Fuggle, YJ Ma, CT Chen, Francesco Sette, Atsushi Fujimori, Y Ueda, Koji Kosuge, None, Soft-x-ray-absorption studies of the electronic-structure changes through the VO2 phase transition. Physical Review B. ,vol. 43, pp. 7263- 7266 ,(1991) , 10.1103/PHYSREVB.43.7263
M. Abbate, R. Potze, G. A. Sawatzky, C. Schlenker, H. J. Lin, L. H. Tjeng, C. T. Chen, D. Teehan, T. S. Turner, Changes in the electronic structure of Ti4O7 across the semiconductor-semiconductor-metal transitions. Physical Review B. ,vol. 51, pp. 10150- 10153 ,(1995) , 10.1103/PHYSREVB.51.10150
A Fujimori, I Hase, M Nakamura, H Namatame, Y Fujishima, Y Tokura, M Abbate, Frank MF de Groot, MT Czyzyk, JC Fuggle, O Strebel, F Lopez, M Domke, G Kaindl, None, Doping-induced changes in the electronic structure ofLaxSr1−xTiO3: Limitation of the one-electron rigid-band model and the Hubbard model Physical Review B. ,vol. 46, pp. 9841- 9844 ,(1992) , 10.1103/PHYSREVB.46.9841