Single-Atom Manipulation of Co Embedded in Cu(001) Surfaces
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概要
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Scanning tunneling microscopy (STM) is used to study the STM-tip-induced movement of Co atoms in a diluted Co/Cu(001) surface alloy. By varying the sample temperature from 4 K up to room temperature, we measured the threshold temperature at which an incorporated Co atom can be moved, which is approximately 150 K. We propose that a vacancy-mediated mechanism is responsible for the observed movement, in which vacancies under the tip area exchange with an embedded Co atom. Finally, we present for the first time a selective movement of single Co embedded atoms.
- 2006-03-15
著者
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De Jonge
Department Of Medical Oncology Daniel Den Hoed Center Erasmus University
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Kurnosikov Oleg
Department of Applied Physics, Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, 5600MB Eindhoven, The Netherlands
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Swagten Henk
Department of Applied Physics, Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, 5600MB Eindhoven, The Netherlands
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Koopmans Bert
Department of Applied Physics, Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands
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Adam Omer
Department of Applied Physics, Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands
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Kohlhepp Jurgen
Department of Applied Physics, Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands
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