Electron doping by charge transfer at LaFeO3/Sm 2CuO4 epitaxial interfaces

Flavio Y. Bruno; Rainer Schmidt; Maria Varela; Javier Garcia-Barriocanal; Alberto Rivera-Calzada; Fabian A. Cuellar; Carlos Leon; Pardeep Thakur; Julio C. Cezar; Nicholas B. Brookes; Mar Garcia-Hernandez; Elbio Dagotto; Stephen J. Pennycook; Jacobo Santamaria

doi:10.1002/adma.201203483

Electron doping by charge transfer at LaFeO₃/Sm ₂CuO₄ epitaxial interfaces

Flavio Y. Bruno, Rainer Schmidt, Maria Varela, Javier Garcia-Barriocanal, Alberto Rivera-Calzada, Fabian A. Cuellar, Carlos Leon, Pardeep Thakur, Julio C. Cezar, Nicholas B. Brookes, Mar Garcia-Hernandez, Elbio Dagotto, Stephen J. Pennycook, Jacobo Santamaria

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Abstract

Using X-ray absorption spectroscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for charge transfer at the interface between the Mott insulators Sm₂CuO₄ and LaFeO₃ is obtained. As a consequence of the charge transfer, the Sm₂CuO₄ is doped with electrons and thus epitaxial Sm ₂CuO₄/LaFeO₃ heterostructures become metallic.

Original language	English (US)
Pages (from-to)	1468-1473
Number of pages	6
Journal	Advanced Materials
Volume	25
Issue number	10
DOIs	https://doi.org/10.1002/adma.201203483
State	Published - Mar 13 2013

Keywords

charge transfer
interface phenomena
superlattices

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Bruno, F. Y., Schmidt, R., Varela, M., Garcia-Barriocanal, J., Rivera-Calzada, A., Cuellar, F. A., Leon, C., Thakur, P., Cezar, J. C., Brookes, N. B., Garcia-Hernandez, M., Dagotto, E., Pennycook, S. J., & Santamaria, J. (2013). Electron doping by charge transfer at LaFeO₃/Sm ₂CuO₄ epitaxial interfaces. Advanced Materials, 25(10), 1468-1473. https://doi.org/10.1002/adma.201203483

Bruno, FY, Schmidt, R, Varela, M, Garcia-Barriocanal, J, Rivera-Calzada, A, Cuellar, FA, Leon, C, Thakur, P, Cezar, JC, Brookes, NB, Garcia-Hernandez, M, Dagotto, E, Pennycook, SJ & Santamaria, J 2013, 'Electron doping by charge transfer at LaFeO₃/Sm ₂CuO₄ epitaxial interfaces', Advanced Materials, vol. 25, no. 10, pp. 1468-1473. https://doi.org/10.1002/adma.201203483

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title = "Electron doping by charge transfer at LaFeO3/Sm 2CuO4 epitaxial interfaces",

abstract = "Using X-ray absorption spectroscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for charge transfer at the interface between the Mott insulators Sm2CuO4 and LaFeO3 is obtained. As a consequence of the charge transfer, the Sm2CuO4 is doped with electrons and thus epitaxial Sm 2CuO4/LaFeO3 heterostructures become metallic.",

keywords = "charge transfer, interface phenomena, superlattices",

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T1 - Electron doping by charge transfer at LaFeO3/Sm 2CuO4 epitaxial interfaces

AU - Bruno, Flavio Y.

AU - Schmidt, Rainer

AU - Varela, Maria

AU - Garcia-Barriocanal, Javier

AU - Rivera-Calzada, Alberto

AU - Cuellar, Fabian A.

AU - Leon, Carlos

AU - Thakur, Pardeep

AU - Cezar, Julio C.

AU - Brookes, Nicholas B.

AU - Garcia-Hernandez, Mar

AU - Dagotto, Elbio

AU - Pennycook, Stephen J.

AU - Santamaria, Jacobo

PY - 2013/3/13

Y1 - 2013/3/13

N2 - Using X-ray absorption spectroscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for charge transfer at the interface between the Mott insulators Sm2CuO4 and LaFeO3 is obtained. As a consequence of the charge transfer, the Sm2CuO4 is doped with electrons and thus epitaxial Sm 2CuO4/LaFeO3 heterostructures become metallic.

AB - Using X-ray absorption spectroscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for charge transfer at the interface between the Mott insulators Sm2CuO4 and LaFeO3 is obtained. As a consequence of the charge transfer, the Sm2CuO4 is doped with electrons and thus epitaxial Sm 2CuO4/LaFeO3 heterostructures become metallic.

KW - charge transfer

KW - interface phenomena

KW - superlattices

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