Room temperature formation of high-mobility two-dimensional electron gases at crystalline complex oxide interfaces.

Chen, Y Z; Bovet, N; Kasama, T; Gao, W W; Yazdi, S; Ma, C; Pryds, N; Linderoth, S · Adv Mater · 2014

basic_science · Level V

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Abstract

Well-controlled sub-unit-cell layer-bylayer epitaxial growth of spinel alumina is achieved at room temperature on a TiO2 -terminated SrTiO3 single-crystalline substrate. By tailoring the interface redox reaction, 2D electron gases with mobilities exceeding 3000 cm 2 V(-1) s(-1) are achieved at this novel oxide interface.