This title appears in the Scientific Report :
2012
Please use the identifier:
http://dx.doi.org/10.1088/0953-8984/24/33/335502 in citations.
Electronic states of moiré modulated Cu films
Electronic states of moiré modulated Cu films
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...
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Personal Name(s): | Moras, P. |
---|---|
Sheverdyeva, P. M. / Carbone, C. / Topwal, D. / Ferrari, L. / Bihlmayer, G. / Ouazi, S. / Rusponi, S. / Lehnert, A. / Brune, H. | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 Quanten-Theorie der Materialien; PGI-1 |
Published in: | Journal of physics / Condensed matter, 24 (2012) S. 335502 |
Imprint: |
Bristol
IOP Publ.
2012
|
Physical Description: |
335502 |
PubMed ID: |
22813539 |
DOI: |
10.1088/0953-8984/24/33/335502 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Journal of Physics: Condensed Matter
24 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |