This article reports ab initio Fermi surfaces and conduction-band calculations of both stoichiometric and oxygen-reduced MoO3. The data, based on a TB-LMTO approach in LDA, provide a convincing and detailed interpretation of the one-electron removal XPS valence bands, where a clear energy gap is observed for the stoichiometric samples, whereas a significant emission at the Fermi edge is measured for the oxygen reduced system. In addition, the electrical conductivity, as deduced from the shape of the calculated Fermi surface, is confined in the xz plane of the crystal, as required for Luttinger-liquid behavior. These results, when compared to the conduction mechanism observed in the blue bronze K0.3MoO3, clearly suggest that oxygen reduction and doping can bring to very different processes for the electronic transport.

Ab initio Fermi surface and conduction-band calculations in oxygen-reduced MoO3 / Rozzi, C. A.; Manghi, Franca; F., Parmigiani. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 68:(2003), pp. 75106-75111.

Ab initio Fermi surface and conduction-band calculations in oxygen-reduced MoO3

MANGHI, Franca;
2003

Abstract

This article reports ab initio Fermi surfaces and conduction-band calculations of both stoichiometric and oxygen-reduced MoO3. The data, based on a TB-LMTO approach in LDA, provide a convincing and detailed interpretation of the one-electron removal XPS valence bands, where a clear energy gap is observed for the stoichiometric samples, whereas a significant emission at the Fermi edge is measured for the oxygen reduced system. In addition, the electrical conductivity, as deduced from the shape of the calculated Fermi surface, is confined in the xz plane of the crystal, as required for Luttinger-liquid behavior. These results, when compared to the conduction mechanism observed in the blue bronze K0.3MoO3, clearly suggest that oxygen reduction and doping can bring to very different processes for the electronic transport.
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75106
75111
Ab initio Fermi surface and conduction-band calculations in oxygen-reduced MoO3 / Rozzi, C. A.; Manghi, Franca; F., Parmigiani. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 68:(2003), pp. 75106-75111.
Rozzi, C. A.; Manghi, Franca; F., Parmigiani
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/455305
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