Acoustic Phonon Anomaly in MgB2

Details Acoustic Phonon Anomaly in MgB2 Acoustic Phonon Anomaly in MgB2

2002-02-04

arxiv.org/abs/cond-mat/0202050v2

Phys. Rev. B 66, 014513 (2002).

Physics

Condensed Matter

Superconductivity

4+ pages, 3 figures, RevTeX 4, revised version, accepted to PRB

Scientific paper

10.1103/PhysRevB.66.014513

Recent first principles calculations of the phonon dispersion curves in MgB_2 have suggested the presence of anomalies in some of the curves, particularly in the longitudinal acoustical (LA) branch in the Gamma to A direction. Similar behavior has been observed in numerous other superconductors with T_c's higher than those of standard electron-phonon BCS superconductors. Phenomenological calculations of the Gamma->A LA dispersion based on both an acoustical plasmon and a ``resonant polarization'' mechanism are given here to emphasize the importance of these similarities.

Affiliated with

Also associated with

No associations

Rating

Acoustic Phonon Anomaly 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 Acoustic Phonon Anomaly in MgB2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic Phonon Anomaly in MgB2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-345652