Lattice dynamics and electron-phonon coupling in transition metal diborides

Details Lattice dynamics and electron-phonon coupling in transition metal diborides Lattice dynamics and electron-phonon coupling in transition metal diborides

2003-02-20

arxiv.org/abs/cond-mat/0302411v1

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.67.180510

The phonon density-of-states of transition metal diborides TMB2 with TM = Ti, V, Ta, Nb and Y has been measured using the technique of inelastic neutron scattering. The experimental data are compared with ab initio density functional calculations whereby an excellent agreement is registered. The calculations thus can be used to obtain electron-phonon spectral functions within the isotropic limit. A comparison to similar data for MgB2 and AlB2 which were subject of prior publications as well as parameters important for the superconducting properties are part of the discussion.

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