Journal Article

PreJuSER-22321

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electronic states of moiré modulated Cu films

Moras, P. ; Sheverdyeva, P. M. ; Carbone, C. ; Topwal, D. ; Ferrari, L. ; Bihlmayer, G.FZJ* ; Ouazi, S. ; Rusponi, S. ; Lehnert, A. ; Brune, H.

2012
IOP Publ. Bristol

This record in other databases:    

Please use a persistent id in citations: doi:10.1088/0953-8984/24/33/335502

Abstract: 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.

Keyword(s): J

Note: We gratefully acknowledge support from the Italian MIUR (Grant No. PRIN 20087NX9YT).

---

Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)
2. Quanten-Theorie der Materialien (IAS-1)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2012

---

Database coverage:
; Current Contents - Social and Behavioral Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---