Physics – Condensed Matter – Superconductivity
Scientific paper
2008-04-08
Phys. Rev. Lett. 100, 227002 (2008)
Physics
Condensed Matter
Superconductivity
submited to PRL
Scientific paper
10.1103/PhysRevLett.100.227002
We report the first measurement of the optical phonon dispersion in optimally doped single layer Bi2Sr1.6La0.4Cu2O6+delta using inelastic x-ray scattering. We found a strong softening of the Cu-O bond stretching phonon at about q=(0.25,0,0) from 76 to 60 meV, similar to the one reported in other cuprates. A direct comparison with angle-resolved photoemission spectroscopy measurements taken on the same sample, revealed an excellent agreement in terms of energy and momentum between the ARPES nodal kink and the soft part of the bond stretching phonon. Indeed, we find that the momentum space where a 63 meV kink is observed can be connected with a vector q=(xi,0,0) with xi~0.22, which corresponds exactly to the soft part of the bond stretching phonon mode. This result supports an interpretation of the ARPES kink in terms of electron-phonon coupling.
Baron Alfred Q. R.
d'Astuto Matteo
Eisaki Hiroshi
Garcia D. R.
Graf Jeff
No associations
LandOfFree
Bond stretching phonon softening and angle-resolved photoemission kinks in optimally doped Bi2Sr1.6La0.4Cu2O6 superconductors 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 Bond stretching phonon softening and angle-resolved photoemission kinks in optimally doped Bi2Sr1.6La0.4Cu2O6 superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bond stretching phonon softening and angle-resolved photoemission kinks in optimally doped Bi2Sr1.6La0.4Cu2O6 superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-573612