Direct Evidence for the Effect of Quantum Confinement of Surface-State Electrons on Atomic Diffusion

Negulyaev, N. N. and Stepanyuk, V. S. and Niebergall, L. and Bruno, P. and Hergert, W. and Repp, J. and Rieder, K. -H. and Meyer, G. (2008) Direct Evidence for the Effect of Quantum Confinement of Surface-State Electrons on Atomic Diffusion. PHYSICAL REVIEW LETTERS, 101 (22): 226601. ISSN 0031-9007, 1079-7114

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Abstract

We report on the direct observations of the effect of quantum confinement of surface-state electrons on atomic diffusion. Confined electronic states induced by open nanoscale resonators [consisting of two parallel monatomic Cu chains on Cu(111)] are studied by means of scanning tunneling microscope measurements and first-principles calculations. Strongly anisotropic diffusion of adatoms around and inside resonators is revealed at low temperatures. The formation of diffusion channels and empty zones is demonstrated. We show that it is possible to engineer atomic diffusion by varying the distance between the resonator walls.

Item Type: Article
Uncontrolled Keywords: MEDIATED 3-ADSORBATE INTERACTION; RANGE OSCILLATORY INTERACTION; ADSORBATE INTERACTIONS; ADATOMS; CONSEQUENCES; 4D;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Jascha Repp
Depositing User: Dr. Gernot Deinzer
Date Deposited: 19 Oct 2020 06:02
Last Modified: 19 Oct 2020 06:02
URI: https://pred.uni-regensburg.de/id/eprint/30035

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