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American Physical Society, Physical review B, 11(87), 2013

DOI: 10.1103/physrevb.87.115138

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Combined ARPES and STM study of Pb/Au(111) Moiré structure: One overlayer, two symmetries

Journal article published in 2013 by A. Crepaldi, E. Frantzeskakis, S. Pons, F. Calleja, M. Etzkorn, A. P. Seitsonen ORCID, H. Brune, K. Kern, M. Grioni
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Abstract

The structural and electronic properties of a Pb monolayer (ML) grown on Au(111) are investigated by scanning tunneling microscopy (STM) and angle resolved photoelectron spectroscopy (ARPES). We find an incommensurate Moiré structure with an approximate (5.77×5.77) R21.5∘ unit cell, and two rotational domains. We observe three Pb-derived bands of p orbital character. The symmetry properties and sharpness of their Fermi surfaces are remarkably different. They reflect the different degrees of hybridization of these bands with the Au(111) bulk continuum.