Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3(111) heterostructures by pulsed laser deposition

Minhui Hu, Qinghua Zhang, Lin Gu, Qinlin Guo, Yanwei Cao, M. Kareev, Jak Chakhalian, Jiandong Guo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Unlike widely explored complex oxide heterostructures grown along [001], the study of [111]-oriented heterointerfaces is very limited thus far. One of the main challenges is to overcome the polar discontinuity that hinders the epitaxy of atomically sharp interfaces. Here, by taking LaCoO3/SrTiO3(111) as a prototype, we show that the reconstruction, which effectively compensates the surface polarity, can stabilize the epitaxy of the heterostructure with polar discontinuity. A reconstructed substrate surface is prepared, while the growth is controlled to form reconstruction on the film surface. To suppress the chemical diffusion across the interface, the growth is interrupted between each unit cell layer to allow the lattice relaxation at a lowered temperature. In this way, high quality two-dimensional growth is realized and the heterointerfaces exhibit sharpness at the atomic scale. Our work provides a path to precisely control the growth of complex oxide heterostructures along polar orientations that exhibit emergent quantum phenomena.

Original languageEnglish (US)
Article number031603
JournalApplied Physics Letters
Volume112
Issue number3
DOIs
StatePublished - Jan 15 2018

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epitaxy
pulsed laser deposition
discontinuity
oxides
sharpness
polarity
prototypes
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Hu, Minhui ; Zhang, Qinghua ; Gu, Lin ; Guo, Qinlin ; Cao, Yanwei ; Kareev, M. ; Chakhalian, Jak ; Guo, Jiandong. / Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3(111) heterostructures by pulsed laser deposition. In: Applied Physics Letters. 2018 ; Vol. 112, No. 3.
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Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3(111) heterostructures by pulsed laser deposition. / Hu, Minhui; Zhang, Qinghua; Gu, Lin; Guo, Qinlin; Cao, Yanwei; Kareev, M.; Chakhalian, Jak; Guo, Jiandong.

In: Applied Physics Letters, Vol. 112, No. 3, 031603, 15.01.2018.

Research output: Contribution to journalArticle

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AU - Cao, Yanwei

AU - Kareev, M.

AU - Chakhalian, Jak

AU - Guo, Jiandong

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