Raj, S. ; Hashimoto, D. ; Matsui, H. ; Souma, S. ; Sato, T. ; Takahashi, T. ; Sarma, D. D. ; Mahadevan, Priya ; Oishi, S. (2006) Angle-resolved photoemission spectroscopy of the insulating NaxWO3: Anderson localization, polaron formation, and remnant Fermi surface Physical Review Letters, 96 (14). 147603_1-147603_4. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v96/i14/e147603
Related URL: http://dx.doi.org/10.1103/PhysRevLett.96.147603
Abstract
The electronic structure of the insulating sodium tungsten bronze, Na0.025WO3, is investigated by high-resolution angle-resolved photoemission spectroscopy. We find that near-EF states are localized due to the strong disorder arising from random distribution of Na+ ions in the WO3 lattice, which makes the system insulating. The temperature dependence of photoemission spectra provides direct evidence for polaron formation. The remnant Fermi surface of the insulator is found to be the replica of the real Fermi surface in the metallic system.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46404 |
| Deposited On: | 04 Jul 2011 12:07 |
| Last Modified: | 04 Jul 2011 12:07 |
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