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arXiv · 1806.07611

Quantum Engineering of Single-Crystalline Silver Thin Films

Ilya A. Rodionov·Aleksandr S. Baburin·Aidar R. Gabidullin·Sergey S. Maklakov·Swen Peters·Ilya A. Ryzhikov·Alexander V. Andriyash
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Abstract

There is a demand for the manufacture of ultra low-loss metallic films with high-quality single crystals and surface for quantum optics and quantum information processing. Many researches are devoted to alternative materials, but silver is by far the most preferred low-loss material at optical and near-IR frequencies. Usually, epitaxial growth is used to deposit single-crystalline silver films, but they still suffer from losses and well-known deweting effect. Here we report the two-step approach for e-beam evaporation of atomically smooth single-crystalline metallic films. The proposed method is self-controlled by quantum size effects and is based on the step switch of film growth kinetics between two deposition steps, which allow to overcome the film-surface dewetting. Here we have used it to deposit 35-100 nm thick single-crystalline silver films with sub-100 pm surface roughness and extremely low losses. We anticipate that the proposed approach could be readily adopted for the synthesis of other low-loss single-crystalline metallic thin films.

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BibTeXRIS

Ilya A. Rodionov, Aleksandr S. Baburin, Aidar R. Gabidullin, Sergey S. Maklakov, Swen Peters, Ilya A. Ryzhikov, Alexander V. Andriyash. 2018-06-20. Quantum Engineering of Single-Crystalline Silver Thin Films. https://doi.org/10.1038/s41598-019-48508-3

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