Electronic surface structure of n-ML Ag/Cu(111) and Cs/n-ML Ag/Cu(111) as investigated by 2PPE and STS

Wessendorf, M.Wiemann, C.Bauer, M.Aeschlimann, M.Schneider, M. A.Brune, H.Kern, K.2009-04-142009-04-142009-04-14200410.1007/s00339-003-2313-3https://infoscience.epfl.ch/handle/20.500.14299/37198WOS:0001864975000094447We investigated the electronic structure of epitaxially grown silver films on Cu(111) with and without adsorption of cesium by means of scanning tunneling spectroscopy and two-photon photoemission. This system has been chosen as a model system to engineer and measure the dynamics of charge-transfer processes between an adsorbate and a heterogeneous substrate. Special emphasis has been laid on the investigation of the energy shift of the Shockley-type surface state and an excited cesium resonance as a function of Ag film thickness. For the cesium resonance we observe an increase in line width with increasing layer thickness.Surface Electronic and Atomic StructureSpectroscopySpin-Polarized STMElectronic surface structure of n-ML Ag/Cu(111) and Cs/n-ML Ag/Cu(111) as investigated by 2PPE and STStext::journal::journal article::research article