Phonon Density-of-States in MgB2

Details Phonon Density-of-States in MgB2 Phonon Density-of-States in MgB2

2001-03-02

arxiv.org/abs/cond-mat/0103064v1

Phys. Rev. Lett, 87, 017005 (2001)

Physics

Condensed Matter

Superconductivity

RevTeX 4 pages 3 figures

Scientific paper

10.1103/PhysRevLett.87.017005

We report inelastic neutron scattering measurements of the phonon density-of-states in Mg11B2, which has a superconducting transition at 39.2 K. The acoustic phonons extend in energy to 36 meV, and there are highly dispersive optic branches peaking at 54, 78, 89 and 97 meV. A simple Born-von Karman model is able to reproduce the mode energies, and provides an estimate of the electron-phonon coupling of lambda~0.9. The estimated boron and magnesium contributions to the isotope effect are in qualitative agreement with experiment. The data confirm that a conventional phonon mechanism, with moderately strong electron-phonon coupling, can explain the observed superconductivity.

Affiliated with

Also associated with

No associations

Rating

Phonon Density-of-States in MgB2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Phonon Density-of-States in MgB2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phonon Density-of-States in MgB2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-336067