Publications by Yulin Chen

Controlled synthesis of topological insulator nanoplate arrays on mica

Journal of the American Chemical Society 134 (2012) 6132-6135

H Li, J Cao, W Zheng, Y Chen, D Wu, W Dang, K Wang, H Peng, Z Liu

The orientation- and position-controlled synthesis of single-crystal topological insulator (Bi 2 Se 3 and Bi 2 Te 3 ) nanoplate arrays on mica substrates was achieved using van der Waals epitaxy. Individual ultrathin nanoplates with the lateral dimension up to ∼0.1 mm or uniform thickness down to 1-2 nm were produced. Single-Dirac-cone surface states of nanoplate aggregates were confirmed by angle-resolved photoemission spectroscopy measurements. The large-grain-size, single-crystal nanoplate arrays grown on mica can act as facile platforms for a combination of spectroscopy and in situ transport measurements, which may open up new avenues for studying exotic physical phenomena, surface chemical reactions, and modification in topological insulators. © 2012 American Chemical Society.

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