Phys. Rev. Lett. 98, 146804 (2007) [4 pages]Doping of Monatomic Cu Chains with Single Co AtomsReceived 20 December 2006; published 6 April 2007 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. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.146804
DOI:
10.1103/PhysRevLett.98.146804
PACS:
73.20.At, 68.37.Ef, 68.65.La, 81.16.Ta
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