δ -Doping of oxygen vacancies dictated by thermodynamics in epitaxial SrTiO3 films

Fengmiao Li; Fang Yang; Yan Liang; Shanming Li; Zhenzhong Yang; Qinghua Zhang; Wentao Li; Xuetao Zhu; Lin Gu; Jiandi Zhang; E. W. Plummer; Jiandong Guo

doi:10.1063/1.4985048

δ -Doping of oxygen vacancies dictated by thermodynamics in epitaxial SrTiO₃ films

Fengmiao Li
, Fang Yang
, Yan Liang
, Shanming Li
, Zhenzhong Yang
, Qinghua Zhang
, Wentao Li
, Xuetao Zhu
, Lin Gu
, Jiandi Zhang
, E. W. Plummer
, Jiandong Guo

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Homoepitaxial SrTiO₃(110) film is grown by molecular beam epitaxy in ultra-high vacuum with oxygen diffusing from substrate as the only oxidant. The resulted oxygen vacancies (V_Os) are found to be spatially confined within few subsurface layers only, forming a quasi-two-dimensional doped region with a tunable high concentration. Such a δ-function distribution of V_Os is essentially determined by the thermodynamics associated with the surface reconstruction, and facilitated by the relatively high growth temperature. Our results demonstrate that it is feasible to tune V_Os distribution at the atomic scale by controlling the lattice structure of oxide surfaces.

Original language	English
Article number	065001
Journal	AIP Advances
Volume	7
Issue number	6
DOIs	https://doi.org/10.1063/1.4985048
State	Published - 1 Jun 2017
Externally published	Yes

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title = "δ -Doping of oxygen vacancies dictated by thermodynamics in epitaxial SrTiO3 films",

abstract = "Homoepitaxial SrTiO3(110) film is grown by molecular beam epitaxy in ultra-high vacuum with oxygen diffusing from substrate as the only oxidant. The resulted oxygen vacancies (VOs) are found to be spatially confined within few subsurface layers only, forming a quasi-two-dimensional doped region with a tunable high concentration. Such a δ-function distribution of VOs is essentially determined by the thermodynamics associated with the surface reconstruction, and facilitated by the relatively high growth temperature. Our results demonstrate that it is feasible to tune VOs distribution at the atomic scale by controlling the lattice structure of oxide surfaces.",

author = "Fengmiao Li and Fang Yang and Yan Liang and Shanming Li and Zhenzhong Yang and Qinghua Zhang and Wentao Li and Xuetao Zhu and Lin Gu and Jiandi Zhang and Plummer, \{E. W.\} and Jiandong Guo",

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doi = "10.1063/1.4985048",

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T1 - δ -Doping of oxygen vacancies dictated by thermodynamics in epitaxial SrTiO3 films

AU - Li, Fengmiao

AU - Yang, Fang

AU - Liang, Yan

AU - Li, Shanming

AU - Yang, Zhenzhong

AU - Zhang, Qinghua

AU - Li, Wentao

AU - Zhu, Xuetao

AU - Gu, Lin

AU - Zhang, Jiandi

AU - Plummer, E. W.

AU - Guo, Jiandong

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Homoepitaxial SrTiO3(110) film is grown by molecular beam epitaxy in ultra-high vacuum with oxygen diffusing from substrate as the only oxidant. The resulted oxygen vacancies (VOs) are found to be spatially confined within few subsurface layers only, forming a quasi-two-dimensional doped region with a tunable high concentration. Such a δ-function distribution of VOs is essentially determined by the thermodynamics associated with the surface reconstruction, and facilitated by the relatively high growth temperature. Our results demonstrate that it is feasible to tune VOs distribution at the atomic scale by controlling the lattice structure of oxide surfaces.

AB - Homoepitaxial SrTiO3(110) film is grown by molecular beam epitaxy in ultra-high vacuum with oxygen diffusing from substrate as the only oxidant. The resulted oxygen vacancies (VOs) are found to be spatially confined within few subsurface layers only, forming a quasi-two-dimensional doped region with a tunable high concentration. Such a δ-function distribution of VOs is essentially determined by the thermodynamics associated with the surface reconstruction, and facilitated by the relatively high growth temperature. Our results demonstrate that it is feasible to tune VOs distribution at the atomic scale by controlling the lattice structure of oxide surfaces.

UR - https://www.scopus.com/pages/publications/85020026878

U2 - 10.1063/1.4985048

DO - 10.1063/1.4985048

M3 - 文章

AN - SCOPUS:85020026878

SN - 2158-3226

VL - 7

JO - AIP Advances

JF - AIP Advances

IS - 6

M1 - 065001

ER -

δ -Doping of oxygen vacancies dictated by thermodynamics in epitaxial SrTiO₃ films

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