Real-Time Observation of Reactive Spreading of Gold on Silicon

Autor:	Ferralis, Nicola, Gabaly, Farid El, Schmid, Andreas K., Maboudian, Roya, Carraro, Carlo
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Phys. Rev. Lett. 103 (2009), 256102
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.103.256102
Popis:	The spreading of a bilayer gold film propagating outward from gold clusters, which are pinned to clean Si(111), is imaged in real time by low energy electron microscopy. By monitoring the evolution of the boundary of the gold film at fixed temperature, a linear dependence of the spreading radius on time is found. The measured spreading velocities in the temperature range of 800 < T < 930 K varied from below 100 pm/s to 50 nm/s. We show that the spreading rate is limited by the reaction to form Au silicide, and the spreading velocity is likely regulated by the reconstruction of the gold silicide that occurs at the interface. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0912.0761 Zobrazit plný text záznamu View this record from Arxiv