Half-metallic nature of the low-temperature grown Co2MnSi films on SrTiO3

K. Kudo; S. Yamada; M. Yafuso; T. Kimura; V. K. Lazarov; K. Hamaya

doi:10.1016/j.jallcom.2020.155571

Half-metallic nature of the low-temperature grown Co₂MnSi films on SrTiO₃

K. Kudo, S. Yamada, M. Yafuso, T. Kimura, V. K. Lazarov, K. Hamaya^*

^*Corresponding author for this work

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

Abstract

We experimentally show that half-metallic Co₂MnSi films can be grown on SrTiO₃(001) at around 350 °C by molecular beam epitaxy. Despite relatively low-temperature grown Co₂MnSi films, L2₁-ordered structures, high saturation magnetic moments of ∼5.0 μ_B/f.u., and the negative sign of the anisotropic magnetoresistance (AMR) indicating half-metallic nature are obtained. For the 350°C-grown Co₂MnSi films, a low Gilbert damping constant of ∼0.0035, implying the high spin polarization, is evaluated. This study will open a way for developing novel spintronic applications consisting of Co₂MnSi and perovskite oxides such as high-performance interfacial multiferroic systems and efficient spin-to-charge conversion systems.

Original language	English
Article number	155571
Number of pages	6
Journal	JOURNAL OF ALLOYS AND COMPOUNDS
Volume	854
Early online date	20 Jun 2020
DOIs	https://doi.org/10.1016/j.jallcom.2020.155571
Publication status	Published - 15 Feb 2021

Keywords

Heusler alloy
Low temperature growth
Moleclar beam epitaxy
Perovskite oxide materials

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10.1016/j.jallcom.2020.155571

Cite this

@article{4b0b29af4e7848c1ba7fbc5d0c81363c,

title = "Half-metallic nature of the low-temperature grown Co2MnSi films on SrTiO3",

abstract = "We experimentally show that half-metallic Co2MnSi films can be grown on SrTiO3(001) at around 350 °C by molecular beam epitaxy. Despite relatively low-temperature grown Co2MnSi films, L21-ordered structures, high saturation magnetic moments of ∼5.0 μB/f.u., and the negative sign of the anisotropic magnetoresistance (AMR) indicating half-metallic nature are obtained. For the 350°C-grown Co2MnSi films, a low Gilbert damping constant of ∼0.0035, implying the high spin polarization, is evaluated. This study will open a way for developing novel spintronic applications consisting of Co2MnSi and perovskite oxides such as high-performance interfacial multiferroic systems and efficient spin-to-charge conversion systems.",

keywords = "Heusler alloy, Low temperature growth, Moleclar beam epitaxy, Perovskite oxide materials",

author = "K. Kudo and S. Yamada and M. Yafuso and T. Kimura and Lazarov, {V. K.} and K. Hamaya",

year = "2021",

month = feb,

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doi = "10.1016/j.jallcom.2020.155571",

language = "English",

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journal = "JOURNAL OF ALLOYS AND COMPOUNDS",

issn = "0925-8388",

publisher = "Elsevier",

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TY - JOUR

T1 - Half-metallic nature of the low-temperature grown Co2MnSi films on SrTiO3

AU - Kudo, K.

AU - Yamada, S.

AU - Yafuso, M.

AU - Kimura, T.

AU - Lazarov, V. K.

AU - Hamaya, K.

PY - 2021/2/15

Y1 - 2021/2/15

N2 - We experimentally show that half-metallic Co2MnSi films can be grown on SrTiO3(001) at around 350 °C by molecular beam epitaxy. Despite relatively low-temperature grown Co2MnSi films, L21-ordered structures, high saturation magnetic moments of ∼5.0 μB/f.u., and the negative sign of the anisotropic magnetoresistance (AMR) indicating half-metallic nature are obtained. For the 350°C-grown Co2MnSi films, a low Gilbert damping constant of ∼0.0035, implying the high spin polarization, is evaluated. This study will open a way for developing novel spintronic applications consisting of Co2MnSi and perovskite oxides such as high-performance interfacial multiferroic systems and efficient spin-to-charge conversion systems.

AB - We experimentally show that half-metallic Co2MnSi films can be grown on SrTiO3(001) at around 350 °C by molecular beam epitaxy. Despite relatively low-temperature grown Co2MnSi films, L21-ordered structures, high saturation magnetic moments of ∼5.0 μB/f.u., and the negative sign of the anisotropic magnetoresistance (AMR) indicating half-metallic nature are obtained. For the 350°C-grown Co2MnSi films, a low Gilbert damping constant of ∼0.0035, implying the high spin polarization, is evaluated. This study will open a way for developing novel spintronic applications consisting of Co2MnSi and perovskite oxides such as high-performance interfacial multiferroic systems and efficient spin-to-charge conversion systems.

KW - Heusler alloy

KW - Low temperature growth

KW - Moleclar beam epitaxy

KW - Perovskite oxide materials

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DO - 10.1016/j.jallcom.2020.155571

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AN - SCOPUS:85091658940

SN - 0925-8388

VL - 854

JO - JOURNAL OF ALLOYS AND COMPOUNDS

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