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Cited by 59 publications
(98 citation statements)
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“…In a (4 × 4) unit cell, at nominal coverage θ = 1/16 ML, the corresponding adsorption energy is E ads (1/16) = −1.67 eV. The dependence of this adsorption energy on θ is mostly due, at low coverages, to the electrostatic dipole-dipole repulsion [49,50]:…”
Section: Adsorption Energetics Of Na On Cu(001)mentioning
confidence: 99%
“…In a (4 × 4) unit cell, at nominal coverage θ = 1/16 ML, the corresponding adsorption energy is E ads (1/16) = −1.67 eV. The dependence of this adsorption energy on θ is mostly due, at low coverages, to the electrostatic dipole-dipole repulsion [49,50]:…”
Section: Adsorption Energetics Of Na On Cu(001)mentioning
confidence: 99%
“…1 QHAS has been applied to different metal/metal and adsorbate/metal systems, the diffusion of Na adatoms ͑at different coverages͒ on Cu͑001͒ being one of the most extensively systems studied so far. [2][3][4][5][6][7][8][9][10][11][12] At low coverages, this system has been theoretically described within the so-called single adsorbate approximation and analyzed in terms of the motional narrowing effect, 4,7 and also within the Kramers turnover theory 5 and the dephasing theory. 6 In particular, the motional narrowing effect governs the broadening of the lineshapes as a function of the friction, the parallel momentum transfer, the lattice structure, and the jump dynamics.…”
Section: Introductionmentioning
confidence: 99%
“…We have also chosen a static ÿeld in one direction and a harmonic mixing signal in the other one, emphasizing the role of the potential energy coupling in the way each ÿeld a ects the transport in the perpendicular direction. The system investigated represents a model for transport of Na atoms on a Cu(0 0 1) surface [40], therefore the results presented here can be of relevance for the control of surface electromigration [33,35,38], but are also applicable to particle separation in 2D devices [15,21,23], transport of vortices in superconductors [17,44] or electron currents through semiconductors [9].…”
Section: Discussionmentioning
confidence: 99%
“…The value of the friction coe cient b and of the parameter V r are usually ÿxed by the experimental conditions. Here we set b = 0:07 and V r = 5 8 , which correspond to a model for di usion of Na atoms on a symmetric Cu(0 0 1) surface ÿtted to experiment [40]. This very system operates in the low friction regime.…”
Section: Introductionmentioning
confidence: 99%