Chemical resolution at ionic crystal surfaces using dynamic atomic force microscopy with metallic tips

Teobaldi, G. and Lammle, K. and Trevethan, T. and Watkins, Matthew and Schwarz, A. and Wiesendanger, R. and Shluger, A. L. (2011) Chemical resolution at ionic crystal surfaces using dynamic atomic force microscopy with metallic tips. Physical Review Letters, 106 (21). ISSN 0031-9007

Full text not available from this repository.

Item Type:Article
Item Status:Live Archive

Abstract

We demonstrate that well prepared and characterized Cr tips can provide atomic resolution on the bulk NaCl(001) surface with dynamic atomic force microscopy in the noncontact regime at relatively large tip-sample separations. At these conditions, the surface chemical structure can be resolved yet tip-surface instabilities are absent. Our calculations demonstrate that chemical identification is unambiguous, because the interaction is always largest above the anions. This conclusion is generally valid for other polar surfaces, and can thus provide a new practical route for straightforward interpretation of atomically resolved images. © 2011 American Physical Society.

Keywords:Atomic resolution, Chemical identification, Chemical resolution, Dynamic atomic force microscopy, Ionic crystals, Metallic tips, Non-contact, Polar surfaces, Surface chemicals, Atomic force microscopy, Sodium chloride, Surface structure, Chromium
Subjects:F Physical Sciences > F300 Physics
F Physical Sciences > F370 Nuclear and Particle Physics
Divisions:College of Science > School of Mathematics and Physics
Related URLs:
ID Code:17710
Deposited On:14 Aug 2015 11:42

Repository Staff Only: item control page