Fölsch, Stefan and Helms, Andreas and Riemann, Andreas and Repp, Jascha and Meyer, Gerhard and Rieder, Karl-Heinz (2002) Nanoscale surface patterning by adsorbate-induced faceting and selective growth: NaCl on Cu(211). Surface Science 497 (1-3), pp. 113-126.
Full text not available from this repository.
We present a combined high-resolution electron diffraction (SPALEED) and scanning tunneling microscopy study of the insulator/metal growth system NaCl/Cu(2 1 1) which is inherently unstable against lateral pattern formation on the nanometer scale. Cu(2 1 1) is a vicinal surface with (1 1 1) terraces and intrinsic (1 0 0) steps (step distance 6.25 Å). This starting surface restructures upon NaCl deposition when the growth temperature exceeds ∼270 K. The initially flat surface is transformed into a periodic one-dimensional hill-and-valley structure consisting of (3 1 1) and (1 1 1) facets. NaCl grows selectively on (3 1 1) facets only, thereby creating a regular surface pattern with alternating stripes of bare Cu and chemically inert NaCl-covered areas. The lateral stripe spacing can be varied from ∼30 Å at 300 K to ∼230 Å at 600 K via the growth/annealing temperature. The present restructuring process is governed by the interplay between energetics and kinetics, namely by (1) the tendency to form (1 0 0)-terminated NaCl layers, (2) energetically favored interfacial matching between NaCl(1 0 0) and Cu(3 1 1), and (3) sufficient mobility of the substrate surface to allow for Cu mass transport.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Jascha Repp|
|Keywords:||Low energy electron diffraction (LEED); Scanning tunneling microscopy; Faceting; Surface structure, morphology, roughness, and topography; Copper; Alkali halides; Vicinal single crystal surfaces; Insulating films|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||03 Jul 2012 12:27|
|Last Modified:||21 Sep 2012 11:47|