Quantum Markovian activated surface diffusion of interacting adsorbates

Details Quantum Markovian activated surface diffusion of interacting adsorbates Quantum Markovian activated surface diffusion of interacting adsorbates

2008-03-04

arxiv.org/abs/0803.0535v2

J. Chem. Phys. 129, 184704 (2008)

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4 figures

Scientific paper

10.1063/1.3009624

A quantum Markovian activated atom-surface diffusion model with interacting adsorbates is proposed for the intermediate scattering function, which is shown to be complex-valued and factorizable into a classical-like and a quantum-mechanical factor. Applications to the diffusion of Na atoms on flat (weakly corrugated) and corrugated-Cu(001) surfaces at different coverages and surface temperatures are analyzed. Quantum effects are relevant to diffusion at low surface temperatures and coverages even for relatively heavy particles, such as Na atoms, where transport by tunneling is absent.

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