Non-volatile control of 2DEG conductivity at oxide interfaces

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, Seung Hyub Baek

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


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(Zr0.2Ti 0.8)O3 overlayer on 2DEG (LaAlO3/SrTiO 3), 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.

Original languageEnglish (US)
Pages (from-to)4612-4617
Number of pages6
JournalAdvanced Materials
Issue number33
StatePublished - Sep 6 2013

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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