Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 17: Nanotribulogy
O 17.2: Vortrag
Montag, 26. März 2012, 16:15–16:30, A 053
Spin friction observed on the atomic scale — •Boris Wolter1, Yasuo Yoshida1, Kirsten von Bergmann1, André Kubetzka1, Saw-Wai Hla2, and Roland Wiesendanger1 — 1Institut für Angewandte Physik, Universität Hamburg — 2Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio
We present a combined experimental and theoretical study of frictional phenomena occurring when a single magnetic atom is moved over a magnetic surface with the help of a spin-polarized scanning tunnelling microscope tip [1]. By monitoring the spin-resolved atom manipulation traces and comparing them with the results of Monte-Carlo simulations, we are able to reveal the characteristic friction force variations resulting from the occurrence of 'spin friction'.
[1] D. Serrate et al., Nature Nanotechnology 5, 350-353 (2010)