Berlin 2008 – scientific programme
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O: Fachverband Oberflächenphysik
O 5: Magnetic Nanostructures
O 5.4: Talk
Monday, February 25, 2008, 12:00–12:15, MA 043
Quantum resonators on metal surfaces: theoretical and experimental studies — •L. Niebergall1, N.N. Negulyaev2, V.S. Stepanyuk1, P. Bruno1, J. Repp3, G. Meyer4, and K.-H. Rieder5 — 1Max Planck Institute of Microstructure Physics, 06120 Halle, Germany — 2Physics Department, Martin-Luther-University Halle-Wittenberg, 06099 Halle, Germany — 3Institute of Experimental and Applied Physics, University Regensburg, 93053 Regensburg, Germany — 4IBM Research, Zurich Research Laboratory, 8803 Rueschlikon, Switzerland — 5Institute of Experimental Physics, FU Berlin, 14195 Berlin, Germany
Confinement of surface-state electrons on metal surfaces can lead to many interesting effects [1-3]. Here, we present a combined experimental and theoretical studies on adatom motion in quantum resonators. Using STM technique we construct two parallel monatomic Cu chains on Cu(111). Quantum confinement of surface electrons between chains is revealed. Experimental and theoretical studies demonstrate that adatom motion inside the resonators at low temperature is determined by quantized electronic states in resonators.
1. V.S. Stepanyuk et al., Phys. Rev. Lett. 94, 187201 (2005).
2. L. Niebergall et al., Phys. Rev. Lett. 96, 127204 (2006).
3. V.S. Stepanyuk et al., New J. Phys. 9, 388 (2007).