Reconstruction-induced multiple gaps in the weak coupling limit: the surface band of Au(111) vicinal surfaces

Clément Didiot (1) , Yannick Fagot-Revurat (1) , Stéphane Pons , Bertrand Kierren (1) , Christophe Chatelain (1) , Daniel Malterre (1)

1 LPM - Laboratoire de physique des matériaux

Opening of several gaps in the surface band structure of vicinal Au(23 23 21) surface has been evidenced by high resolution photoemission spectroscopy whereas the energy dependence of the surface electronic density have been determined by scanning tunneling spectroscopy. From a methodological point of view, the values of the gaps and the phase of the electronic density allow to estimate the reconstruction potential which yields the electronic Bragg diffraction, the gap formation and the modulation of the electronic density. These spectroscopic behaviors give a pedagogical illustration of one of the basic concepts of solid state physics.

Mots clés: ARPES; STM; STS; vicinal; Shockley states; Au(111)

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Clément Didiot, Yannick Fagot-Revurat, Stéphane Pons, Bertrand Kierren, Christophe Chatelain, et al.. Reconstruction-induced multiple gaps in the weak coupling limit: the surface band of Au(111) vicinal surfaces. 2006. ⟨hal-00020183⟩