%0 Journal Article
%A Moras, P.
%A Sheverdyeva, P. M.
%A Carbone, C.
%A Topwal, D.
%A Ferrari, L.
%A Bihlmayer, G.
%A Ouazi, S.
%A Rusponi, S.
%A Lehnert, A.
%A Brune, H.
%T Electronic states of moiré modulated Cu films
%J Journal of physics / Condensed matter
%V 24
%@ 0953-8984
%C Bristol
%I IOP Publ.
%M PreJuSER-22321
%P 335502
%D 2012
%Z We gratefully acknowledge support from the Italian MIUR (Grant No. PRIN 20087NX9YT).
%X We examined by low-energy electron diffraction and scanning tunneling microscopy the surface of thin Cu films on Pt(111). The Cu/Pt lattice mismatch induces a moiré modulation for films from 3 to about 10 ML thickness. We used angle-resolved photoemission spectroscopy to examine the effects of this structural modulation on the electronic states of the system. A series of hexagonal- and trigonal-like constant energy contours is found in the proximity of the Cu(111) zone boundaries. These electronic patterns are generated by Cu sp-quantum well state replicas, originating from multiple points of the reciprocal lattice associated with the moiré superstructure. Layer-dependent strain relaxation and hybridization with the substrate bands concur to determine the dispersion and energy position of the Cu Shockley surface state.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:22813539
%U <Go to ISI:>//WOS:000306997300009
%R 10.1088/0953-8984/24/33/335502
%U https://juser.fz-juelich.de/record/22321