Choi, Woo Seok Lee, Suyoun Cooper, Valentino R. Lee, Ho Nyung 2024-01-20T14:03:14Z 2024-01-20T14:03:14Z 2021-09-05 2012-09 1530-6984 https://pubs.kist.re.kr/handle/201004/128927 A two-dimensional (2D) electron gas system in an oxide heterostructure serves as an important playground for novel phenomena. Here, we show that, by using fractional delta-doping to control the interface's composition in LaxSr1-xTiO3/SrTiO3 artificial oxide superlattices, the filling-controlled 2D insulator metal transition can be realized. The atomic-scale control of d-electron band filling, which in turn contributes to the tuning of effective mass and density of the charge carriers, is found to be a fascinating route to substantially enhanced carrier mobilities. English AMER CHEMICAL SOC TRANSPORT-PROPERTIES ELECTRON-GAS SR1-XLAXTIO3 Fractionally delta-Doped Oxide Superlattices for Higher Carrier Mobilities Article 10.1021/nl301844z 1 NANO LETTERS, v.12, no.9, pp.4590 - 4594 NANO LETTERS 12 9 4590 4594 scie scopus 000308576000028 2-s2.0-84866332701 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article TRANSPORT-PROPERTIES ELECTRON-GAS SR1-XLAXTIO3 Perovskite oxide 2DEG pulsed laser epitaxy fractional superlattices band-filling control multichannel conduction effective mass