Atomic-scale epitaxial aluminum film on GaAs substrate

Yen Ting Fan, Ming Cheng Lo, Chu Chun Wu, Peng Yu Chen, Jenq Shinn Wu, Chi Te Liang, Sheng-Di Lin*

*Corresponding author for this work

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)


Atomic-scale metal films exhibit intriguing size-dependent film stability, electrical conductivity, superconductivity, and chemical reactivity. With advancing methods for preparing ultra-thin and atomically smooth metal films, clear evidences of the quantum size effect have been experimentally collected in the past two decades. However, with the problems of small-area fabrication, film oxidation in air, and highly-sensitive interfaces between the metal, substrate, and capping layer, the uses of the quantized metallic films for further ex-situ investigations and applications have been seriously limited. To this end, we develop a large-area fabrication method for continuous atomic-scale aluminum film. The self-limited oxidation of aluminum protects and quantizes the metallic film and enables ex-situ characterizations and device processing in air. Structure analysis and electrical measurements on the prepared films imply the quantum size effect in the atomic-scale aluminum film. Our work opens the way for further physics studies and device applications using the quantized electronic states in metals.

期刊AIP Advances
出版狀態Published - 1 七月 2017

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