Electron transport through monovalent atomic wires
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© 2004 American Physical Society (APS). This is the accepted version of the following article: Lee, Y. J. & Brandbyge, M. & Puska, M. J. & Taylor, J. & Stokbro, K. & Nieminen, Risto M. 2004. Electron transport through monovalent atomic wires. Physical Review B. Volume 69, Issue 12. 125409/1-5. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.69.125409, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.69.125409.
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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125409/1-5
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Physical Review B, Volume 69, Issue 12
Abstract
Using a first-principles density-functional method we model electron transport through linear chains of monovalent atoms between two bulk electrodes. For noble-metal chains the transport resembles that for free electrons over a potential barrier whereas for alkali-metal chains resonance states at the chain determine the conductance. As a result, the conductance for noble-metal chains is close to one quantum of conductance, and it oscillates moderately so that an even number of chain atoms yields a higher value than an odd number. The conductance oscillations are large for alkali-metal chains and their phase is opposite to that of noble-metal chainsDescription
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Lee, Y. J. & Brandbyge, M. & Puska, M. J. & Taylor, J. & Stokbro, K. & Nieminen, Risto M. 2004. Electron transport through monovalent atomic wires. Physical Review B. Volume 69, Issue 12. 125409/1-5. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.69.125409.