Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 16: Scanning probe methods I
O 16.3: Vortrag
Montag, 14. März 2011, 15:30–15:45, WIL C307
Imaging atomic-scale magnetic structures by means of lateral atom manipulation with an STM tip — •Boris Wolter1, Yasuo Yoshida1, André Kubetzka1, Kirsten von Bergmann1, Saw-Wai Hla2, and Roland Wiesendanger1 — 1Institute of Applied Physics, University of Hamburg, Jungiusstr. 11, 20355 Hamburg — 2Nanoscale & Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701
While spin-polarized STM and lateral atom manipulation with an STM tip are known to be powerful experimental techniques that have been employed to great extent, there are not many studies regarding the combination of these two methods1.
Stroscio et al. have shown the use of lateral atom manipulation for enhanced imaging of the Cu(111) surface2. We apply this approach to SP-STM as an innovative magnetic imaging technique, observing increased magnetic contrast and atomic resolution of the substrate at the same time. To improve our understanding of this process, we combine Monte Carlo simulations for a classical Heisenberg spin system and lateral atom manipulation3 with a model for SP-STM imaging4. By evaluating and comparing the results, we expect to gain insight into the dynamics involved in the manipulation imaging with magnetic atoms.
1. D. Serrate et al., Nature Nano. 5, 350-353 (2010)
2. J. Stroscio et al., Science 8, 306, 5694, 242-247 (2004)
3. A. Kühnle et al., Surf. Sci. 449, 15 (2001)
4. S. Heinze, Appl. Phys. A 85, 407-414 (2006)