Moon, Seon Young Kim, Dai-Hong Chang, Hye Jung Choi, Jong Kwon Kang, Chong-Yun Choi, Heon Jin Hong, Seong-Hyeon Baek, Seung-Hyub Kim, Jin-Sang Jang, Ho Won 2024-01-20T13:03:46Z 2024-01-20T13:03:46Z 2021-09-01 2013-01-07 0003-6951 https://pubs.kist.re.kr/handle/201004/128459 The two-dimensional electron gas formed at LaAlO3/SrTiO3 heterointerfaces exhibits a variety of interesting physical properties. Herein, we report on tunable conductivity at LaAlO3/SrxCa1-xTiO3 heterostructures. By changing the Sr content in the SrxCa1-xTiO3 (0 <= x <= 1) layers, the orthorhombicity of the films, which inevitably accompanies TiO6 octahedral distortions in the unit cells, could be varied. As a result, the interfacial conductivity can be tuned over 6 orders of magnitude. We suggest that the use of pseudosubstrates with chemical substitution or alloying is a promising route to finely tune conductivity at oxide heterointerfaces. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4773986] English AMER INST PHYSICS OXIDE HETEROSTRUCTURES ELECTRON-GAS LAALO3/SRTIO3 HETEROINTERFACE PEROVSKITES INTERFACES Tunable conductivity at LaAlO3/SrxCa1-xTiO3 (0 <= x <= 1) heterointerfaces Article 10.1063/1.4773986 1 APPLIED PHYSICS LETTERS, v.102, no.1 APPLIED PHYSICS LETTERS 102 1 scie scopus 000313646500089 2-s2.0-84872307797 Physics, Applied Physics Article OXIDE HETEROSTRUCTURES ELECTRON-GAS LAALO3/SRTIO3 HETEROINTERFACE PEROVSKITES INTERFACES 2DEG Conductivity Tunable heterointerfaces