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

A. Crepaldi , S. Pons (1) , E. Frantzeskakis , F. Calleja (2) , M. Etzkorn (2) , A. P. Seitsonen , K. Kern (2) , H. Brune (2) , M. Grioni (3, 2)

1 INSP - Institut des Nanosciences de Paris
2 IPMC - Institut de la physique de la matière condensée
3 Institute of Condensed Matter Physics [Lausanne]

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 Moire structure with an approximate (5.77 x 5.77) R21.5 degrees. 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. DOI: 10.1103/PhysRevB.87.115138

Domaines: Matière Condensée [cond-mat]

A. Crepaldi, S. Pons, E. Frantzeskakis, F. Calleja, M. Etzkorn, et al.. Combined ARPES and STM study of Pb/Au(111) Moire structure: One overlayer, two symmetries. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2013, 87 (11), pp.115138. ⟨10.1103/PhysRevB.87.115138⟩. ⟨hal-01233577⟩