Author/Authors :
Eremeev، نويسنده , , S.V. and Sklyadneva، نويسنده , , I.Yu. and Echenique، نويسنده , , P.M. and Borisova، نويسنده , , S.D. and Benedek، نويسنده , , G. and Rusina، نويسنده , , G.G. and Chulkov، نويسنده , , E.V.، نويسنده ,
Abstract :
We present calculation results for electron–phonon (e–ph) coupling in one monolayer (ML) of Na on the Cu(1 1 1) surface. We show that the e–p coupling parameter λ decreases compared to that for clean Cu(1 1 1) due to the significant decrease of the Na vertical vibrational mode contribution to the Eliashberg function in the 1 ML Na/Cu(1 1 1) system. The corresponding phonon induced lifetime broadening Γe–ph of a quantum-well state at low temperature decreases by 30% compared to that on clean Cu(1 1 1).
