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Quantum confinement in monatomic Cu chains on Cu(111)

Stefan Fölsch ; Per Hyldgaard (Institutionen för teknisk fysik) ; R Koch ; K. H. Ploog
Physical Review Letters Vol. 92 (2004), p. 056803.
[Artikel, refereegranskad vetenskaplig]

The quantum confinement in surface-supported atomic-scale metal chains was demonstrated, characterized by a pseudogap in the projected bulk band structure of the substrate. Low-temperature scanning tunneling spectroscopy and density functional theory (DFT) calculations were used for the study. The chain-localized electron dynamics showed that the dispersion was fully described within a ID tight-binding approach. The results confirm the confinement of unoccupied states to the chain in the relevant energy range, along with a significant extension of these states into the vacuum region.

Nyckelord: STM, surface state, one dimensional electron systems, density functional theory

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Denna post skapades 2006-08-28. Senast ändrad 2016-05-17.
CPL Pubid: 2080


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