Hysteretic electrical transport in BaTiO3 /Ba1- x Srx TiO3 /Ge heterostructures
Publication
, Journal Article
Ngai, JH; Kumah, DP; Ahn, CH; Walker, FJ
Published in: Applied Physics Letters
October 2, 2014
We present electrical transport measurements of heterostructures comprised of BaTiO3 and Ba1-xSrxTiO3 epitaxially grown on Ge. Sr alloying imparts compressive strain to the BaTiO3, which enables the thermal expansion mismatch between BaTiO3 and Ge to be overcome to achieve c-axis oriented growth. The conduction bands of BaTiO3 and Ba1-xSrxTiO3 are nearly aligned with the conduction band of Ge, which facilitates electron transport. Electrical transport measurements through the dielectric stack exhibit rectifying behavior and hysteresis, where the latter is consistent with ferroelectric switching.
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Published In
Applied Physics Letters
DOI
ISSN
0003-6951
Publication Date
October 2, 2014
Volume
104
Issue
6
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 10 Technology
- 09 Engineering
- 02 Physical Sciences
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Ngai, J. H., Kumah, D. P., Ahn, C. H., & Walker, F. J. (2014). Hysteretic electrical transport in BaTiO3 /Ba1- x Srx TiO3 /Ge heterostructures. Applied Physics Letters, 104(6). https://doi.org/10.1063/1.4864648
Ngai, J. H., D. P. Kumah, C. H. Ahn, and F. J. Walker. “Hysteretic electrical transport in BaTiO3 /Ba1- x Srx TiO3 /Ge heterostructures.” Applied Physics Letters 104, no. 6 (October 2, 2014). https://doi.org/10.1063/1.4864648.
Ngai JH, Kumah DP, Ahn CH, Walker FJ. Hysteretic electrical transport in BaTiO3 /Ba1- x Srx TiO3 /Ge heterostructures. Applied Physics Letters. 2014 Oct 2;104(6).
Ngai, J. H., et al. “Hysteretic electrical transport in BaTiO3 /Ba1- x Srx TiO3 /Ge heterostructures.” Applied Physics Letters, vol. 104, no. 6, Oct. 2014. Scopus, doi:10.1063/1.4864648.
Ngai JH, Kumah DP, Ahn CH, Walker FJ. Hysteretic electrical transport in BaTiO3 /Ba1- x Srx TiO3 /Ge heterostructures. Applied Physics Letters. 2014 Oct 2;104(6).
Published In
Applied Physics Letters
DOI
ISSN
0003-6951
Publication Date
October 2, 2014
Volume
104
Issue
6
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 10 Technology
- 09 Engineering
- 02 Physical Sciences