2026-08-20T02:11:20Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/513102023-08-28T01:55:16Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Roca, L.
author
Mascaraque Susunaga, Arantzazu
author
Avila, J.
author
Drouard, S.
author
Guyot, H.
author
Asensio, M.C.
2023-06-20T10:50:10Z
2023-06-20T10:50:10Z
2004-02
1098-0121
10.1103/PhysRevB.69.075114
https://hdl.handle.net/20.500.14352/51310
http://dx.doi.org/10.1103/PhysRevB.69.075114
http://journals.aps.org
The P4W8O32 compound is a member of the low-dimensional monophosphate tungsten bronzes family whose reduced dimensionality induces electronic instabilities such as charge-density waves (CDWs). We report here the direct mapping of the Fermi surface (FS) of this compound at room temperature using synchrotron-radiation angle-resolved photoemission. The recorded FS images confirm the superimposition of three nested sheets, as proposed by the hidden-nesting model. We found two well defined parallel stripes along the (Gamma Y) over bar direction as well as a crosslike feature. Moreover, the small FS splitting predicted by ab initio calculations was distinguished in the experimental data. To extract quantitative information on the CDW phase transitions, the values of the nesting vectors were also determined from the FS topology. The obtained values were in excellent agreement with existing tight-binding calculations, although the accord was even better with the recently published ab initio theoretical predictions.
eng
Fermi-surface analysis of a quasi-two-dimensional monophosphate tungsten bronze
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Mascaraque,A 28libre.pdf
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Mascaraque,A 28libre.pdf.txt