Abstract
Angle-resolved photoemission spectroscopy on optimally doped uncovers a coupling of the electronic bands to a 40 meV mode in an extended -space region away from the nodal direction, leading to a new interpretation of the strong renormalization of the electronic structure seen in Bi2212. Phenomenological agreements with neutron and Raman experiments suggest that this mode is the oxygen bond-buckling phonon. A theoretical calculation based on this assignment reproduces the electronic renormalization seen in the data.
- Received 25 February 2004
DOI:https://doi.org/10.1103/PhysRevLett.93.117003
©2004 American Physical Society