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

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

2004-11-23

arxiv.org/abs/cond-mat/0411580v2

Phys. Rev. Lett. 94, 126804 (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures; Submitted to PRL; Version 2: introduction revised and references added

Scientific paper

10.1103/PhysRevLett.94.126804

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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