Abstract
Adatoms moving along the substrate surface under an STM tip cause a random time dependence of the current, J(t). We have obtained simple expressions for the average current 〈J(t)〉 and the temporary current correlation function 〈J(t +τ)J(τ)〉τ - 〈J(t)〉2 through the diffusion coefficients of the adatoms and a few parameters of the tunneling gap. The results offer a way to study the local diffusion of adatoms by treatment of experimentally measured J(t) dependencies.
Originalsprache | Englisch |
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Seiten (von - bis) | 23-27 |
Seitenumfang | 5 |
Fachzeitschrift | Surface Science |
Jahrgang | 307-309 |
Ausgabenummer | PART A |
DOIs | |
Publikationsstatus | Veröffentlicht - 20 Apr. 1994 |
Extern publiziert | Ja |