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Electronic Structure and Dynamics of Quantum-Well States in thin Yb-Metal Films

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arxiv cond-mat/0411580 v2 pith:ROWJHCU2 submitted 2004-11-23 cond-mat.other

D. Wegner , A. Bauer , G. Kaindl This is my paper
classification cond-mat.other
keywords statesenergyfilmslifetimesquantitativequantum-wellspectrathin
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Quantum-well states above the Fermi energy in thin Yb(111)-metal films deposited on a W(110) single crystal were studied by low-temperature scanning tunneling spectroscopy. These states are laterally highly localized and give rise to sharp peaks in the tunneling spectra. A quantitative analysis of the spectra yields the bulk-band dispersion in Gamma - L direction as well as quasi-particle lifetimes. The quadratic energy dependence of the lifetimes is in quantitative agreement with Fermi-liquid theory.

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