Direct extraction of the Eliashberg function for electron-phonon coupling: a case study of Be(10(-)10).
/ Authors
Jun-ren Shi, Shu-Jung Tang, Biao Wu, Biao Wu, P. Sprunger, Wanli Yang, Wanli Yang, V. Brouet, V. Brouet, Xingjiang Zhou
and 6 more authors
Z. Hussain, Z. Shen, Zhenyu Zhang, Zhenyu Zhang, E. Plummer, E. Plummer
/ Abstract
We propose a systematic procedure to directly extract the Eliashberg function for electron-phonon coupling from high-resolution angle-resolved photoemission measurement. The procedure is successfully applied to the Be(10(-)10) surface, providing new insights into electron-phonon coupling at this surface. The method is shown to be robust against imperfections in experimental data and suitable for wider applications.
Journal: Physical review letters