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- W1907286031 abstract "Abstract magnified image Recent experiments have demonstrated the formation of a two‐dimensional electron gas (2DEG) with a high density of 3 × 10 14 cm –2 at the interface of a band insulator (SrTiO 3 ) and a Mott insulator (GdTiO 3 ), with potential application in electronic devices. This contrasted with the 2DEG at the SrTiO 3 /LaAlO 3 interface, two band insulators, for which the reported electron densities are an order of magnitude lower. Understanding the differences between SrTiO 3 /LaAlO 3 and SrTiO 3 /GdTiO 3 , and identifying other materials combinations that also give rise to such high 2DEG densities will add flexibility to materials design and contribute to advancing this field of research. Based on first‐principles calculations, we propose that YTiO 3 combined with SrTiO 3 will also lead to a 2DEG with density of 3 × 10 14 cm –2 . YTiO 3 is a Mott insulator, with lattice parameters and band structure similar to those of GdTiO 3 . We calculate the band alignment at the SrTiO 3 /YTiO 3 interface, compare with the SrTiO 3 /GdTiO 3 system, and discuss the origins of the differences between the rare‐earth titanates and LaAlO 3 regarding the 2DEG densities. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
- W1907286031 created "2016-06-24" @default.
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- W1907286031 date "2014-05-14" @default.
- W1907286031 modified "2023-10-16" @default.
- W1907286031 title "Band alignment at band-insulator/Mott-insulator interfaces" @default.
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- W1907286031 doi "https://doi.org/10.1002/pssr.201409088" @default.
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