Doping of monatomic Cu chains with single Co atoms |
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Authors: | Lagoute Jérôme Nacci Christophe Fölsch Stefan |
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Institution: | Paul-Drude-Institut für Festk?rperelektronik, Hausvogteiplatz 5-7, D-10117 Berlin, Germany. |
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Abstract: | Close-packed Co-Cu chains of various length and composition were assembled from single Co and Cu atoms on Cu(111) by atom manipulation in a low-temperature scanning tunneling microscope. Local spectroscopy reveals significant electronic Co-Cu coupling leading to confined quantum states delocalized along the heteroatomic chain. Composite Co-Cu chains provide a model case in which the quantum state of an atomic-scale host structure can be tuned by the controlled incorporation of foreign atoms. |
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