TY  - JOUR
AU  - Moras, P.
AU  - Sheverdyeva, P. M.
AU  - Carbone, C.
AU  - Topwal, D.
AU  - Ferrari, L.
AU  - Bihlmayer, G.
AU  - Ouazi, S.
AU  - Rusponi, S.
AU  - Lehnert, A.
AU  - Brune, H.
TI  - Electronic states of moiré modulated Cu films
JO  - Journal of physics / Condensed matter
VL  - 24
SN  - 0953-8984
CY  - Bristol
PB  - IOP Publ.
M1  - PreJuSER-22321
SP  - 335502
PY  - 2012
N1  - We gratefully acknowledge support from the Italian MIUR (Grant No. PRIN 20087NX9YT).
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:22813539
UR  - <Go to ISI:>//WOS:000306997300009
DO  - DOI:10.1088/0953-8984/24/33/335502
UR  - https://juser.fz-juelich.de/record/22321
ER  -