Journal
EUROPHYSICS LETTERS
Volume 64, Issue 1, Pages 104-110Publisher
EDP SCIENCES S A
DOI: 10.1209/epl/i2003-00143-x
Keywords
-
Categories
Ask authors/readers for more resources
We present a first-principles investigation of the lattice dynamics and electron-phonon coupling of the high-T-c superconductor YBa2Cu3O7 within the framework of density functional perturbation theory using a mixed-basis pseudopotential method. The calculated phonon dispersion curves are in excellent agreement with Raman, infrared and neutron data. Calculation of the Eliashberg function alpha(2)F leads to a small electron-phonon coupling lambda = 0.27 in disagreement with earlier approximate treatments. Our calculations strongly support the view that conventional electron-phonon coupling is not an important contribution to superconductivity in high-T-c materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available