Send to

Choose Destination
Phys Rev Lett. 2008 Oct 10;101(15):157005. Epub 2008 Oct 9.

Isotopic fingerprint of electron-phonon coupling in high-Tc cuprates.

Author information

Department of Applied Physics, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan.


Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal direction of oxygen isotope substituted Bi(2)Sr(2)CaCu(2)O(8+delta) reveals a distinct oxygen isotope shift near the electron-boson coupling "kink" in the electronic dispersion. The magnitude (a few meV) and direction of the kink shift are as expected due to the measured isotopic shift of phonon frequency, and are also in agreement with theoretical expectations. This demonstrates the participation of the phonons as dominant players, as well as pinpointing the most relevant of the phonon branches.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center