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ISSN - 00224596, EISSN - 1095726X, Journal of Solid State Chemistry, 2015, p. -

Crystal growth of Bi<inf>2</inf>Te<inf>3</inf> and noble cleaved (0001) surface properties

Atuchin V. V., Golyashov V. A., Kokh K. A., Korolkov I. V., Kozhukhov A. S., Kruchinin V. N., Loshkarev I. D., Pokrovsky L. D., Prosvirin I. P., Romanyuk K. N., Tereshchenko O. E.

© 2015. A high quality Bi<inf>2</inf>Te<inf>3</inf> crystal has been grown by Bridgman method with the use of rotating heat field. The phase purity and bulk structural quality of the crystal have been verified by XRD analysis and rocking curve observation. The atomically smooth Bi<inf>2</inf>Te<inf>3</inf>(0001) surface with an excellent crystallographic quality is formed by cleavage in the air. The chemical and microstructural properties of the surface have been evaluated with RHEED, AFM, STM, SE and XPS. The Bi<inf>2</inf>Te<inf>3</inf>(0001) cleaved surface is formed by atomically smooth terraces with the height of the elemental step of ~1.04±0.1nm, as estimated by AFM. There is no surface oxidation process detected over a month keeping in the air at normal conditions, as shown by comparative core level photoelectron spectroscopy.