Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition

Details Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition

2011-06-14

arxiv.org/abs/1106.2643v1

Physics

Condensed Matter

Superconductivity

Has been accepted for publication in Phys Rev B (2011)

Scientific paper

The dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scattering. The observed phonon energies near \Gamma were in good agreement with published optical data. It was found that two high-energy modes strongly soften near q=0.25 when the system becomes metallic (x >0.35). There was no softening in the insulating phase, even at x=0.30, very near the metal-insulator transition. This suggests that the phonon softening is linked to the appearance of the Fermi-surface.

Affiliated with

Also associated with

No associations

Rating

Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition 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 Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-113338