A spectroscopic view of electron-phonon coupling at metal surfaces

[[abstract]]It is now possible to extract from high-resolution angle-resolved photoemission data, the Eliashberg function α2F(ω) for electron-phonon coupling (EPC). At the same time, first-principles calculations of the EPC for surface states are appearing in the literature presenting an exquisite picture of the origin of the Eliashberg function. The advances in this field are illustrated with new data from surface states on two faces of beryllium and a direct comparison to theory for Be(0001)[[fileno]]2010120010007[[department]]物理