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Fermi-surface-induced lattice distortion in NbTe<sub>2</sub>
Auteur(s)
Battaglia, Corsin
Cercellier, Hervé
Clerc, Florian
Despont, Laurent
Garnier, Michael Gunnar
Koitzsch, Christian
Aebi, Philipp
Berger, Helmuth
Forró, László
Ambrosch-Draxl, Claudia
Date de parution
2005
In
Physical Review B, American Physical Society (APS), 2005/72/195114/1-10
Résumé
The origin of the monoclinic distortion and domain formation in the quasi-two-dimensional layer compound NbTe<sub>2</sub> is investigated. Angle-resolved photoemission shows that the Fermi surface is pseudogapped over large portions of the Brillouin zone. <i>Ab initio</i> calculation of the electron and phonon band structure as well as the static RPA susceptibility lead us to conclude that Fermi surface nesting and electron-phonon coupling play a key role in the lowering of the crystal symmetry and in the formation of the charge density wave phase.
Identifiants
Type de publication
journal article
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