Metal-insulator transition in sodium tungsten bronzes, Nax WO3, studied by angle-resolved photoemission spectroscopy

S. Raj; D. Hashimoto; H. Matsui; S. Souma; T. Sato; T. Takahashi; S. Ray; A. Chakraborty; D. D. Sarma; P. Mahadevan; S. Oishi; W. H. McCarroll; M. Greenblatt

doi:10.1016/j.jmmm.2006.10.1077

Metal-insulator transition in sodium tungsten bronzes, Na_x WO₃, studied by angle-resolved photoemission spectroscopy

S. Raj, D. Hashimoto, H. Matsui, S. Souma, T. Sato, T. Takahashi, S. Ray, A. Chakraborty, D. D. Sarma, P. Mahadevan, S. Oishi, W. H. McCarroll, M. Greenblatt

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3 Citations (Scopus)

Abstract

We report high-resolution angle-resolved photoemission spectroscopy on sodium tungsten bronzes, Na_x WO₃, which exhibit a metal-insulator transition as a function of x. We found that the near-E_F states are localized in Na_x WO₃ (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 Na_x WO₃ band structure with respect to Na doping.

Original language	English
Pages (from-to)	e231-e233
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.1077
Publication status	Published - 2007 Mar

Keywords

Anderson localization
Angle-resolved photoemission spectroscopy
Fermi surface
Metal-insulator transition
Na WO

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10.1016/j.jmmm.2006.10.1077

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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, Na_x WO₃, studied by angle-resolved photoemission spectroscopy. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 1), e231-e233. https://doi.org/10.1016/j.jmmm.2006.10.1077

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title = "Metal-insulator transition in sodium tungsten bronzes, Nax WO3, studied by angle-resolved photoemission spectroscopy",

abstract = "We report high-resolution angle-resolved photoemission spectroscopy on sodium tungsten bronzes, Nax WO3, which exhibit a metal-insulator transition as a function of x. We found that the near-EF states are localized in Nax WO3 (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 Nax WO3 band structure with respect to Na doping.",

keywords = "Anderson localization, Angle-resolved photoemission spectroscopy, Fermi surface, Metal-insulator transition, Na WO",

author = "S. Raj and D. Hashimoto and H. Matsui and S. Souma and T. Sato and T. Takahashi and S. Ray and A. Chakraborty and Sarma, {D. D.} and P. Mahadevan and S. Oishi and McCarroll, {W. H.} and M. Greenblatt",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.1077",

language = "English",

volume = "310",

pages = "e231--e233",

journal = "Journal of Magnetism and Magnetic Materials",

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Raj, S, Hashimoto, D, Matsui, H, Souma, S , Sato, T , Takahashi, T, Ray, S, Chakraborty, A, Sarma, DD, Mahadevan, P, Oishi, S, McCarroll, WH & Greenblatt, M 2007, 'Metal-insulator transition in sodium tungsten bronzes, Na_x WO₃, studied by angle-resolved photoemission spectroscopy', Journal of Magnetism and Magnetic Materials, vol. 310, no. 2 SUPPL. PART 1, pp. e231-e233. https://doi.org/10.1016/j.jmmm.2006.10.1077

TY - JOUR

T1 - Metal-insulator transition in sodium tungsten bronzes, Nax WO3, studied by angle-resolved photoemission spectroscopy

AU - Raj, S.

AU - Hashimoto, D.

AU - Matsui, H.

AU - Souma, S.

AU - Sato, T.

AU - Takahashi, T.

AU - Ray, S.

AU - Chakraborty, A.

AU - Sarma, D. D.

AU - Mahadevan, P.

AU - Oishi, S.

AU - McCarroll, W. H.

AU - Greenblatt, M.

PY - 2007/3

Y1 - 2007/3

N2 - We report high-resolution angle-resolved photoemission spectroscopy on sodium tungsten bronzes, Nax WO3, which exhibit a metal-insulator transition as a function of x. We found that the near-EF states are localized in Nax WO3 (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 Nax WO3 band structure with respect to Na doping.

AB - We report high-resolution angle-resolved photoemission spectroscopy on sodium tungsten bronzes, Nax WO3, which exhibit a metal-insulator transition as a function of x. We found that the near-EF states are localized in Nax WO3 (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 Nax WO3 band structure with respect to Na doping.

KW - Anderson localization

KW - Angle-resolved photoemission spectroscopy

KW - Fermi surface

KW - Metal-insulator transition

KW - Na WO

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U2 - 10.1016/j.jmmm.2006.10.1077

DO - 10.1016/j.jmmm.2006.10.1077

M3 - Article

AN - SCOPUS:33847361542

SN - 0304-8853

VL - 310

SP - e231-e233

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

ER -

Metal-insulator transition in sodium tungsten bronzes, Na_x WO₃, studied by angle-resolved photoemission spectroscopy

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Keywords

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