Raj, S. ; Hashimoto, D. ; Matsui, H. ; Souma, S. ; Sato, T. ; Takahashi, T. ; Ray, S. ; Chakraborty, A. ; Sarma, D.D. ; Mahadevan, P. ; Oishi, S. ; McCarroll, W.H. ; Greenblatt, M. (2007) Metal–insulator transition in sodium tungsten bronzes, NaxWO3, studied by angle-resolved photoemission spectroscopy Journal of Magnetism and Magnetic Materials, 310 (2). e231-e233. ISSN 0304-8853
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jmmm.2006.10.1077
Abstract
We report high-resolution angle-resolved photoemission spectroscopy on sodium tungsten bronzes, NaxWO3, which exhibit a metal–insulator transition as a function of x. We found that the near-EF states are localized in NaxWO3 (x⩽0.25) due to the strong disorder caused by the random distribution of Na+ ions in the WO3 lattice, which makes the system insulating. In the metallic regime we found that the rigid shift of band structure can explain the metallic NaxWO3 band structure with respect to Na doping.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Metal–insulator Transition; Angle-resolved Photoemission Spectroscopy; Anderson Localization; Fermi Surface; NaxWO3 |
| ID Code: | 102988 |
| Deposited On: | 02 Feb 2018 03:57 |
| Last Modified: | 02 Feb 2018 03:57 |
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