Electron-phonon coupling in high-pressure Nb

  1. Get@NRC: Electron-phonon coupling in high-pressure Nb (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1103/PhysRevB.69.132101
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Journal titlePhysical Review B
Pages132101132104; # of pages: 4
AbstractThe Fermi surface, phonon spectrum, and electron-phonon coupling parameter for metallic Nb under high pressure have been investigated with a full potential linearized augmented plane wave, linear muffin-tin orbital, and pseudopotential plane-wave methods. The results support the experimental observation of electronic topological transitions at 5 and 60 GPa. The lower pressure transition is related to a very subtle change in the topology of the Fermi surface as revealed in accurate calculations of the Hall coefficient. The transition at 60 GPa is identified with a change in the Fermi-surface topology due to the crossing of the electronic band along the Γ→N (Σ) direction in the cubic Brillouin zone. The calculated electron-phonon coupling parameters are in qualitative agreement with those derived from high-pressure experiment.
Publication date
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12329130
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Record identifier7f7a57c3-7dd4-49f9-b974-174388486a49
Record created2009-09-10
Record modified2016-05-09
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