Faculté des sciences
Texte intégral

Fermi-surface-induced lattice distortion in NbTe2

Battaglia, Corsin ; Cercellier, Hervé ; Clerc, Florian ; Despont, Laurent ; Garnier, Michael Gunnar ; Koitzsch, Christian ; Aebi, Philipp ; Berger, Helmuth ; Forró, László ; Ambrosch-Draxl, Claudia

In: Physical Review B, 2005, vol. 72, no. 195114, p. 1-10

The origin of the monoclinic distortion and domain formation in the quasi-two-dimensional layer compound NbTe2 is investigated. Angle-resolved photoemission shows that the Fermi surface is pseudogapped over large portions of the Brillouin zone. Ab initio calculation of the electron and phonon band structure as well as the static RPA susceptibility lead us to conclude that Fermi... Plus

Ajouter à la liste personnelle
    Titre
    • Fermi-surface-induced lattice distortion in NbTe2
    Auteur
    • Battaglia, Corsin. Institut de Physique, Université de Neuchâtel, Switzerland
    • Cercellier, Hervé. Institut de Physique, Université de Neuchâtel, Switzerland
    • Clerc, Florian. Institut de Physique, Université de Neuchâtel, Switzerland
    • Despont, Laurent. Institut de Physique, Université de Neuchâtel, Switzerland
    • Garnier, Michael Gunnar. Institut de Physique, Université de Neuchâtel, Switzerland
    • Koitzsch, Christian. Institut de Physique, Université de Neuchâtel, Switzerland
    • Aebi, Philipp. Institut de Physique, Université de Neuchâtel, Switzerland
    • Berger, Helmuth. Institute of Physics of Complex Matter, EPFL, Lausanne, Switzerland
    • Forró, László. Institute of Physics of Complex Matter, EPFL, Lausanne, Switzerland
    • Ambrosch-Draxl, Claudia. Institut für Physik, Karl-Franzens-Universität Graz, Austria
    Type de document
    • Postprint
    Date de publication
    • 2005
    Classification
    • Physique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:20080319115510-TX
    Numéro de soumission
    • 20080319115510-TX
    Summary
    The origin of the monoclinic distortion and domain formation in the quasi-two-dimensional layer compound NbTe2 is investigated. Angle-resolved photoemission shows that the Fermi surface is pseudogapped over large portions of the Brillouin zone. Ab initio 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.