Tunable conductivity at LaAlO3/SrxCa 1-xTiO3 (0 ≤ x ≤ 1) heterointerfaces

Young Seon Moon, Dai Hong Kim, Jung Hye Chang, Jong Kwon Choi, Chong Yun Kang, Heon-Jin Choi, Seong Hyeon Hong, Seung Hyub Baek, Jin Sang Kim, Ho Won Jang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The two-dimensional electron gas formed at LaAlO3/SrTiO 3 heterointerfaces exhibits a variety of interesting physical properties. Herein, we report on tunable conductivity at LaAlO 3/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.

Original languageEnglish
Article number012903
JournalApplied Physics Letters
Volume102
Issue number1
DOIs
Publication statusPublished - 2013 Jan 7

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conductivity
alloying
electron gas
physical properties
routes
substitutes
oxides
cells

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Moon, Y. S., Kim, D. H., Chang, J. H., Kwon Choi, J., Kang, C. Y., Choi, H-J., ... Jang, H. W. (2013). Tunable conductivity at LaAlO3/SrxCa 1-xTiO3 (0 ≤ x ≤ 1) heterointerfaces. Applied Physics Letters, 102(1), [012903]. https://doi.org/10.1063/1.4773986
Moon, Young Seon ; Kim, Dai Hong ; Chang, Jung Hye ; Kwon Choi, Jong ; Kang, Chong Yun ; Choi, Heon-Jin ; Hong, Seong Hyeon ; Baek, Seung Hyub ; Kim, Jin Sang ; Jang, Ho Won. / Tunable conductivity at LaAlO3/SrxCa 1-xTiO3 (0 ≤ x ≤ 1) heterointerfaces. In: Applied Physics Letters. 2013 ; Vol. 102, No. 1.
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Moon, YS, Kim, DH, Chang, JH, Kwon Choi, J, Kang, CY, Choi, H-J, Hong, SH, Baek, SH, Kim, JS & Jang, HW 2013, 'Tunable conductivity at LaAlO3/SrxCa 1-xTiO3 (0 ≤ x ≤ 1) heterointerfaces', Applied Physics Letters, vol. 102, no. 1, 012903. https://doi.org/10.1063/1.4773986

Tunable conductivity at LaAlO3/SrxCa 1-xTiO3 (0 ≤ x ≤ 1) heterointerfaces. / Moon, Young Seon; Kim, Dai Hong; Chang, Jung Hye; Kwon Choi, Jong; Kang, Chong Yun; Choi, Heon-Jin; Hong, Seong Hyeon; Baek, Seung Hyub; Kim, Jin Sang; Jang, Ho Won.

In: Applied Physics Letters, Vol. 102, No. 1, 012903, 07.01.2013.

Research output: Contribution to journalArticle

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AU - Moon, Young Seon

AU - Kim, Dai Hong

AU - Chang, Jung Hye

AU - Kwon Choi, Jong

AU - Kang, Chong Yun

AU - Choi, Heon-Jin

AU - Hong, Seong Hyeon

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AU - Kim, Jin Sang

AU - Jang, Ho Won

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