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DS: Dünne Schichten
DS 20: Schichtwachstum
DS 20.4: Vortrag
Dienstag, 8. März 2005, 16:00–16:15, TU HS107
Cu/MgO(001)studied with IR spectroscopy and AFM — •Fanzhen Meng, Andreas Priebe, Matthias Lust, Dominik Enders, Gerhard Fahsold, and Annemarie Pucci — Kirchhoff-Institut für Physik,Universität Heidelberg
In this work we consider metal films of Cu which are grown on MgO(001) at room temperature and with similar deposition rate (about 0.1 nm/min) in a UHV chamber. The Cu films were grown under CO exposure (pressure is about 4*10−8 mbar) during the whole film growth or only in the beginning of film growth. CO exposure at different phases of the whole film growth process has different effects on film morphologies. We study these films with in-situ IR-transmittance spectroscopy during film growth. We also calculated IR spectra with a Drude-type model and with an effective medium model.
Adsorbates on metal island films can show surface enhanced infrared absorption (SEIRA). The Cu films were cooled down to 100 K for CO exposure and in-situ the IR transmittance was measured.
AFM pictures were taken after transfering of the films into air. The AFM pictures correspond to our findings on film morphology from IR transmission spectra of the metal film and from SEIRA.