Growth Morphology of Ultrathin Pb Layers on Ni(001)
K. Krupskia, b, T. Kobielac and A. Krupskia, b
aDepartment of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
bInstitute of Experimental Physics, University of Wrocław, pl. M. Borna 9, PL 50-204 Wrocław, Poland
cFaculty of Chemistry, Warsaw University of Technology, S. Noakowskiego 3, 00-664 Warsaw, Poland
Received: September 26, 2013; In final form: November 7, 2013
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The atomic structure and morphology of ultrathin Pb layers deposited on the Ni(001) face in ultrahigh vacuum at the substrate temperature, ranging from 145 K to 900 K, were investigated with the use of the Auger electron spectroscopy and low-energy electron diffraction. The analysis of the Auger electron spectroscopy measurements indicates that the Volmer-Weber growth of the Pb takes place for substrate temperature T < 300 K. Between 300 and 600 K, the Stranski-Krastanov growth mode is observed. For 600 K ≤ T ≤ 700 K, only first two-dimensional Pb layer formation is found. Above 700 K desorption of lead atoms from the first layer is observed. The ordered low-energy electron diffraction patterns corresponding to p(1 × 1) and c(2 × 2) structures are observed.

DOI: 10.12693/APhysPolA.125.1159
PACS numbers: 68.35.B-,, 68.35.Ct, 68.43.Mn, 68.47.De, 68.65.Ac