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Shin-Ik Kim, Dai-Hong Kim, Yoonjung Kim, Seon Young Moon, Min-Gyu Kang, Jong Kwon Choi, Ho Won Jang, Seong Keun Kim, Ji-Won Choi, Seok-Jin Yoon, Hye Jung Chang, Chong-Yun Kang, Suyoun Lee, Seong-Hyeon Hong, Jin-Sang Kim and Seung-Hyub Baek Non-Volatile Control of 2DEG Conductivity at Oxide Interfaces Advanced Materials 25

Article first published online: 27 JUN 2013 | DOI: 10.1002/adma.201301097

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The functionalization of two-dimensional electron gas (2DEG) at oxide interfaces can be realized integrating 2DEG with multifunctional oxide overlayers by epitaxial growth. Using a ferroelectric Pb(Zr0.2Ti0.8)O3 overlayer on 2DEG (LaAlO3/SrTiO3), we demonstrate a model system of the functionalized 2DEG, where electrical conductivity of 2DEG can be reversibly controlled with a large on/off ratio (>1000) in a non-volatile way by ferroelectric polarization switching.

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