Electron transport through monovalent atomic wires

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2004-03-19
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
1-5
Series
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 chains.
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Keywords
DFT, electron transport
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Citation
Lee , Y J , Brandbyge , M , Puska , M , Taylor , J , Stokbro , K & Nieminen , R 2004 , ' Electron transport through monovalent atomic wires ' , Physical Review B , vol. 69 , no. 12 , 125409 , pp. 1-5 . https://doi.org/10.1103/PhysRevB.69.125409