Publication: Electronic structure analysis of quasi-one-dimensional monophosphate tungsten bronzes
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2002-09-15
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American Physical Society
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Abstract
Synchrotron-radiation angle-resolved photoemission measurements were performed in the nondoped (PO_2)_4(WO_3)_4(WO_3)_4 compound in order to obtain a detailed picture of the electronic structure. This material is a low-dimensional compound due to the strong anisotropic structure built up with chains. The measurements were done at room temperature, probing different crystalline directions. Three states are observed in the vicinity of the Fermi level: one of them exhibits one-dimensional character while the other two are of two-dimensional nature. A very good agreement has been found between these electronic bands and theoretical calculations based on the hidden nesting mechanism.
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© 2002 The American Physical Society.
This work has been partially financed by the Spanish agency MCYT, under Grant No. MAT2002-03431. A.M. and L.R. thank Ministerio de Ciencia y Tecnología (Grant Nos. PF 00 51683701 and ES 99 50858888, respectively) for financial support.
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1.Physics and Chemistry of Low Dimensional Inorganic Conductor, edited by C. Schlenker, J. Dumas, M. Greenblatt, and S. Van Smaalen, Vol. 354 of NATO Advanced Study Institute, Series B: Physics (Plenum, New York, 1996).
2 .Oxides Bronzes, edited by M. Greenblatt [Int. J. Mod. Phys. B 7, 3937 (1993)].
3. M.-H. Whangbo et al., Science 252, 96 (1991).
4. M. Greenblatt, Chem. Rev. 88, 31 (1988).
5. M. Greenblatt, Acc. Chem. Res. 29, 219 (1996).
6. E. Wang et al., Phys. Rev. B 39, 12 969 (1989).
7. Z.S. Teweldemedhin et al., Phys. Rev. B 46, 7897 (1992).
8. E. Canadell and M.-H. Whangbo, Phys. Rev. B 43, 1894 (1991).
9 J. Dumas et al., J. Solid State Chem. 147, 320 (1999).
10. Z.S. Teweldemedhin et al., Solid State Chem. 95, 21 (1991).
11. J.P. Giroult et al., Acta Crystallogr., Sect. B: Struct. Crystallogr. Cryst. Chem. 37, 2139 (1981).
12. K.E. Smith, Annu. Rep. Prog. Chem., Sect. C: Phys. Chem. 90, 115 (1995).
13. J.B. Goodenough, Bull. Soc. Chim. Fr. 1915, 1200 (1965); Czech. J. Phys., Sect. B 17, 304 (1967).
14. E. Canadell et al., Inorg. Chem. 28, 1466 (1989).
15. E. Canadell et al., Inorg. Chem. 29, 3871 (1990).
16. Notice than the two different calculations give different values for the bandwidths at Ӷ point. As can be expected, the comparison between experiment and theory favors the results obtained for the real (PO_2)_4(WO_3)_4(WO_3)_4 compound.
17. E. Sandre et al., Phys. Rev. Lett. 86, 5100 (2001).
18. F.J. Himpsel, Adv. Phys. 32, 1 (1983).
19. J. Hermanson, Solid State Commun. 22, 9 (1977).
20. J. Ludecke et al., Europhys. Lett. 49, 357 (2000).
21. L. Roca et al. (unpublished).