Title

Local-strain mapping on Ag(111) islands on Nb(110)

Authors

Authors

T. Tomanic; C. Surgers; R. Heid; M. A. Ortigoza; K. P. Bohnen; D. Stoffler;H. von Lohneysen

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

SCANNING TUNNELING MICROSCOPE; THIN-FILMS; TEMPERATURE-DEPENDENCE; ELASTIC-CONSTANTS; GROWTH; DYNAMICS; Physics, Applied

Abstract

The local in-plane strain of Ag(111) islands on the Nb(110) surface has been derived from the lateral variation of the electronic density of states measured by scanning tunneling spectroscopy. The onset energy E-ss of the Shockley-type surface-state band is shifted to higher energies compared to the bulk due to thermal strain arising from the difference in thermal expansion between Nb and Ag and cooling by 565K. A quantitative dependence of E-ss from the strain is obtained by density-functional theory calculations. This allows a mapping of the local strain of individual Ag islands on the nanometer scale. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4745011]

Journal Title

Applied Physics Letters

Volume

101

Issue/Number

6

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

4

WOS Identifier

WOS:000307862400074

ISSN

0003-6951

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