Spin-polarized electron gas in Co2MSi/SrTiO3(M= Ti, V, Cr, Mn, and Fe) heterostructures

S. Nazir; Udo Schwingenschlögl

doi:10.1002/pssr.201600086

Spin-polarized electron gas in Co2MSi/SrTiO3(M= Ti, V, Cr, Mn, and Fe) heterostructures

S. Nazir, Udo Schwingenschlögl

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Abstract

Spin-polarized density functional theory is used to study the TiO2 terminated interfaces between the magnetic Heusler alloys Co2Si (M = Ti, V, Cr, Mn, and Fe) and the non-polar band insulator SrTiO3. The structural relaxation at the interface turns out to depend systematically on the lattice mis- match. Charge transfer from the Heusler alloys (mainly the M 3d orbitals) to the Ti dxy orbitals of the TiO2 interface layer is found to gradually grow from M = Ti to Fe, resulting in an electron gas with increasing density of spin-polarized charge carriers. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English (US)
Pages (from-to)	540-543
Number of pages	4
Journal	physica status solidi (RRL) - Rapid Research Letters
Volume	10
Issue number	7
DOIs	https://doi.org/10.1002/pssr.201600086
State	Published - Jun 8 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).

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10.1002/pssr.201600086

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title = "Spin-polarized electron gas in Co2MSi/SrTiO3(M= Ti, V, Cr, Mn, and Fe) heterostructures",

abstract = "Spin-polarized density functional theory is used to study the TiO2 terminated interfaces between the magnetic Heusler alloys Co2Si (M = Ti, V, Cr, Mn, and Fe) and the non-polar band insulator SrTiO3. The structural relaxation at the interface turns out to depend systematically on the lattice mis- match. Charge transfer from the Heusler alloys (mainly the M 3d orbitals) to the Ti dxy orbitals of the TiO2 interface layer is found to gradually grow from M = Ti to Fe, resulting in an electron gas with increasing density of spin-polarized charge carriers. ({\textcopyright} 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim). {\textcopyright} 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

author = "S. Nazir and Udo Schwingenschl{\"o}gl",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).",

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T1 - Spin-polarized electron gas in Co2MSi/SrTiO3(M= Ti, V, Cr, Mn, and Fe) heterostructures

AU - Nazir, S.

AU - Schwingenschlögl, Udo

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).

PY - 2016/6/8

Y1 - 2016/6/8

N2 - Spin-polarized density functional theory is used to study the TiO2 terminated interfaces between the magnetic Heusler alloys Co2Si (M = Ti, V, Cr, Mn, and Fe) and the non-polar band insulator SrTiO3. The structural relaxation at the interface turns out to depend systematically on the lattice mis- match. Charge transfer from the Heusler alloys (mainly the M 3d orbitals) to the Ti dxy orbitals of the TiO2 interface layer is found to gradually grow from M = Ti to Fe, resulting in an electron gas with increasing density of spin-polarized charge carriers. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - Spin-polarized density functional theory is used to study the TiO2 terminated interfaces between the magnetic Heusler alloys Co2Si (M = Ti, V, Cr, Mn, and Fe) and the non-polar band insulator SrTiO3. The structural relaxation at the interface turns out to depend systematically on the lattice mis- match. Charge transfer from the Heusler alloys (mainly the M 3d orbitals) to the Ti dxy orbitals of the TiO2 interface layer is found to gradually grow from M = Ti to Fe, resulting in an electron gas with increasing density of spin-polarized charge carriers. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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DO - 10.1002/pssr.201600086

M3 - Article

SN - 1862-6254

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JO - physica status solidi (RRL) - Rapid Research Letters

JF - physica status solidi (RRL) - Rapid Research Letters

IS - 7

ER -

Spin-polarized electron gas in Co2MSi/SrTiO3(M= Ti, V, Cr, Mn, and Fe) heterostructures

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