Interface electronic structure in a metal/ferroelectric heterostructure under applied bias

J. E. Rault; G. Agnus; T. Maroutian; V. Pillard; Ph Lecoeur; G. Niu; B. Vilquin; M. G. Silly; A. Bendounan; F. Sirotti; N. Barrett

doi:10.1103/PhysRevB.87.155146

Interface electronic structure in a metal/ferroelectric heterostructure under applied bias

J. E. Rault, G. Agnus, T. Maroutian, V. Pillard, Ph Lecoeur, G. Niu, B. Vilquin, M. G. Silly, A. Bendounan, F. Sirotti, N. Barrett

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

Abstract

The effective barrier height between an electrode and a ferroelectric (FE) depends on both macroscopic electrical properties and microscopic chemical and electronic structure. The behavior of a prototypical electrode/FE/electrode structure, Pt/BaTiO₃/Nb-doped SrTiO₃, under in-situ bias voltage is investigated using x-ray photoelectron spectroscopy. The full band alignment is measured and is supported by transport measurements. Barrier heights depend on interface chemistry and on the FE polarization. A differential response of the core levels to applied bias as a function of the polarization state is observed, consistent with Callen charge variations near the interface.

Original language	English
Article number	155146
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	87
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.87.155146
Publication status	Published - 26 Apr 2013
Externally published	Yes

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Rault, J. E., Agnus, G., Maroutian, T., Pillard, V., Lecoeur, P., Niu, G., Vilquin, B., Silly, M. G., Bendounan, A., Sirotti, F., & Barrett, N. (2013). Interface electronic structure in a metal/ferroelectric heterostructure under applied bias. Physical Review B - Condensed Matter and Materials Physics, 87(15), Article 155146. https://doi.org/10.1103/PhysRevB.87.155146

@article{61831de87bad48ca90501cb140ad585e,

title = "Interface electronic structure in a metal/ferroelectric heterostructure under applied bias",

abstract = "The effective barrier height between an electrode and a ferroelectric (FE) depends on both macroscopic electrical properties and microscopic chemical and electronic structure. The behavior of a prototypical electrode/FE/electrode structure, Pt/BaTiO3/Nb-doped SrTiO3, under in-situ bias voltage is investigated using x-ray photoelectron spectroscopy. The full band alignment is measured and is supported by transport measurements. Barrier heights depend on interface chemistry and on the FE polarization. A differential response of the core levels to applied bias as a function of the polarization state is observed, consistent with Callen charge variations near the interface.",

author = "Rault, \{J. E.\} and G. Agnus and T. Maroutian and V. Pillard and Ph Lecoeur and G. Niu and B. Vilquin and Silly, \{M. G.\} and A. Bendounan and F. Sirotti and N. Barrett",

year = "2013",

month = apr,

day = "26",

doi = "10.1103/PhysRevB.87.155146",

language = "English",

volume = "87",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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T1 - Interface electronic structure in a metal/ferroelectric heterostructure under applied bias

AU - Rault, J. E.

AU - Agnus, G.

AU - Maroutian, T.

AU - Pillard, V.

AU - Lecoeur, Ph

AU - Niu, G.

AU - Vilquin, B.

AU - Silly, M. G.

AU - Bendounan, A.

AU - Sirotti, F.

AU - Barrett, N.

PY - 2013/4/26

Y1 - 2013/4/26

N2 - The effective barrier height between an electrode and a ferroelectric (FE) depends on both macroscopic electrical properties and microscopic chemical and electronic structure. The behavior of a prototypical electrode/FE/electrode structure, Pt/BaTiO3/Nb-doped SrTiO3, under in-situ bias voltage is investigated using x-ray photoelectron spectroscopy. The full band alignment is measured and is supported by transport measurements. Barrier heights depend on interface chemistry and on the FE polarization. A differential response of the core levels to applied bias as a function of the polarization state is observed, consistent with Callen charge variations near the interface.

AB - The effective barrier height between an electrode and a ferroelectric (FE) depends on both macroscopic electrical properties and microscopic chemical and electronic structure. The behavior of a prototypical electrode/FE/electrode structure, Pt/BaTiO3/Nb-doped SrTiO3, under in-situ bias voltage is investigated using x-ray photoelectron spectroscopy. The full band alignment is measured and is supported by transport measurements. Barrier heights depend on interface chemistry and on the FE polarization. A differential response of the core levels to applied bias as a function of the polarization state is observed, consistent with Callen charge variations near the interface.

U2 - 10.1103/PhysRevB.87.155146

DO - 10.1103/PhysRevB.87.155146

M3 - Article

AN - SCOPUS:84877043761

SN - 1098-0121

VL - 87

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 15

M1 - 155146

ER -

Interface electronic structure in a metal/ferroelectric heterostructure under applied bias

Abstract

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