Effect of epitaxial alignment on electron transport from quasi-two-dimensional iron silicide alpha-FeSi2 nanocrystals into p-Si(001)
Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund, р_мол_а, 16-42-243060
Russian Foundation for Basic Research, Government of The Republic of Khakassia, р_а, 17-42-190308
Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund, р_мол_а, 16-42-243035
Tarasov I.A.1, Rautskii M.V.1, Yakovlev I.A.1, Volochaev M.N.1
1Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Email: tia@iph.krasn.ru
Выставление онлайн: 19 апреля 2018 г.
Self-assembled growth of alpha-FeSi2 nanocrystal ensembles on gold-activated and gold-free Si(001) surface by molecular beam epitaxy is reported. The microstructure and basic orientation relationship (OR) between the silicide nanocrystals and silicon substrate were analysed. The study reveals that utilisation of the gold as catalyst regulates the preferable OR of the nanocrystals with silicon and their habitus. It is shown that electron transport from alpha-FeSi2 phase into p-Si(001) can be tuned by the formation of (001) - or (111) - textured alpha-FeSi2 nanocrystals ensembles. A current-voltage characteristic of the structures with different preferable epitaxial alignment (alpha-FeSi2(001)/Si(100) and alpha-FeSi2(111)/Si(100)) shows good linearity at room temperature. However, it becomes non-linear at different temperatures for different ORs due to different Schottky barrier height governed by a particular epitaxial alignment of the alpha-FeSi2/p-Si interfaces. Acknowledgements The work was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research projects No 16-42-243060 and 16-42-243035 and Russian Foundation for Basic Research, Government of The Republic of Khakassia, research project No 17-42-190308. We also thank L.A. Solovyov for his assistance in XRD analysis. The work was supported by the Program of the President of the Russian Federation for the support of leading scientific schools (Scientific School 7559.2016.2), Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research projects No 16-42-243060 and 16-42-243035. We also thank L.A. Solovyov for his assistance in XRD analysis.
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