Current-perpendicular-to-plane giant magnetoresistive properties in Co2Mn(Ge0.75Ga0.25)/Cu2TiAl/Co2Mn(Ge0.75Ga0.25) all-Heusler alloy pseudo spin valve

S. Li; Y. K. Takahashi; Y. Sakuraba; J. Chen; T. Furubayashi; O. Mryasov; S. Faleev; K. Hono

doi:10.1063/1.4942853

Current-perpendicular-to-plane giant magnetoresistive properties in Co₂Mn(Ge_0.75Ga_0.25)/Cu₂TiAl/Co₂Mn(Ge_0.75Ga_0.25) all-Heusler alloy pseudo spin valve

S. Li, Y. K. Takahashi, Y. Sakuraba, J. Chen, T. Furubayashi, O. Mryasov, S. Faleev, K. Hono^*

^*この研究の対応する著者

研究成果: Article › 査読

13 被引用数 (Scopus)

抄録

Nonmagnetic Cu₂TiAl (CTA) Heusler compound is proposed as a new spacer material for all-Heusler alloy current-perpendicular-to-plane giant magnetoresistance devices based on first-principle calculations. The (001)-orientated Co₂Mn(Ge_0.75Ga_0.25) (CMGG)/CTA/CMGG epitaxial pseudo spin valve (PSV) grown on MgO(100) single crystal substrate showed relatively large MR output, ΔRA∼5.4 mΩ μm², which is comparable to that of the CMGG/Ag/CMGG PSV prepared with the same condition. Considering the short spin diffusion length in CTA, this result indicates a better electronic band matching for the CTA/CMGG interface than the Ag/CMGG interface in agreement with the first-principle calculation results. (001)- and (011)-orientated CMGG/CTA/CMGG PSV show similar MR outputs, indicating that the CTA spacer suppresses the orientation dependence of MR output which is usually observed in Ag-spacer CPP-PSV.

本文言語	English
論文番号	093911
ジャーナル	Journal of Applied Physics
巻	119
号	9
DOI	https://doi.org/10.1063/1.4942853
出版ステータス	Published - 2016 3月 7
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1063/1.4942853

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「Current-perpendicular-to-plane giant magnetoresistive properties in Co₂Mn(Ge_0.75Ga_0.25)/Cu₂TiAl/Co₂Mn(Ge_0.75Ga_0.25) all-Heusler alloy pseudo spin valve」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル

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title = "Current-perpendicular-to-plane giant magnetoresistive properties in Co2Mn(Ge0.75Ga0.25)/Cu2TiAl/Co2Mn(Ge0.75Ga0.25) all-Heusler alloy pseudo spin valve",

abstract = "Nonmagnetic Cu2TiAl (CTA) Heusler compound is proposed as a new spacer material for all-Heusler alloy current-perpendicular-to-plane giant magnetoresistance devices based on first-principle calculations. The (001)-orientated Co2Mn(Ge0.75Ga0.25) (CMGG)/CTA/CMGG epitaxial pseudo spin valve (PSV) grown on MgO(100) single crystal substrate showed relatively large MR output, ΔRA∼5.4 mΩ μm2, which is comparable to that of the CMGG/Ag/CMGG PSV prepared with the same condition. Considering the short spin diffusion length in CTA, this result indicates a better electronic band matching for the CTA/CMGG interface than the Ag/CMGG interface in agreement with the first-principle calculation results. (001)- and (011)-orientated CMGG/CTA/CMGG PSV show similar MR outputs, indicating that the CTA spacer suppresses the orientation dependence of MR output which is usually observed in Ag-spacer CPP-PSV.",

author = "S. Li and Takahashi, {Y. K.} and Y. Sakuraba and J. Chen and T. Furubayashi and O. Mryasov and S. Faleev and K. Hono",

note = "Funding Information: This work was supported in part by the Grant-in-aid for Scientific Research (A) (Grant No. 25249087) from the Japan Society for the Promotion of Science (JSPS) and by the Advanced Storage Technology Consortium (ASTC) of IDEMA. J. C. acknowledges the National Institute for Materials Science (NIMS) for the provision of a Junior Research Assistantship. Publisher Copyright: {\textcopyright} 2016 AIP Publishing LLC.",

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doi = "10.1063/1.4942853",

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AU - Li, S.

AU - Takahashi, Y. K.

AU - Sakuraba, Y.

AU - Chen, J.

AU - Furubayashi, T.

AU - Mryasov, O.

AU - Faleev, S.

AU - Hono, K.

N1 - Funding Information: This work was supported in part by the Grant-in-aid for Scientific Research (A) (Grant No. 25249087) from the Japan Society for the Promotion of Science (JSPS) and by the Advanced Storage Technology Consortium (ASTC) of IDEMA. J. C. acknowledges the National Institute for Materials Science (NIMS) for the provision of a Junior Research Assistantship. Publisher Copyright: © 2016 AIP Publishing LLC.

PY - 2016/3/7

Y1 - 2016/3/7

N2 - Nonmagnetic Cu2TiAl (CTA) Heusler compound is proposed as a new spacer material for all-Heusler alloy current-perpendicular-to-plane giant magnetoresistance devices based on first-principle calculations. The (001)-orientated Co2Mn(Ge0.75Ga0.25) (CMGG)/CTA/CMGG epitaxial pseudo spin valve (PSV) grown on MgO(100) single crystal substrate showed relatively large MR output, ΔRA∼5.4 mΩ μm2, which is comparable to that of the CMGG/Ag/CMGG PSV prepared with the same condition. Considering the short spin diffusion length in CTA, this result indicates a better electronic band matching for the CTA/CMGG interface than the Ag/CMGG interface in agreement with the first-principle calculation results. (001)- and (011)-orientated CMGG/CTA/CMGG PSV show similar MR outputs, indicating that the CTA spacer suppresses the orientation dependence of MR output which is usually observed in Ag-spacer CPP-PSV.

AB - Nonmagnetic Cu2TiAl (CTA) Heusler compound is proposed as a new spacer material for all-Heusler alloy current-perpendicular-to-plane giant magnetoresistance devices based on first-principle calculations. The (001)-orientated Co2Mn(Ge0.75Ga0.25) (CMGG)/CTA/CMGG epitaxial pseudo spin valve (PSV) grown on MgO(100) single crystal substrate showed relatively large MR output, ΔRA∼5.4 mΩ μm2, which is comparable to that of the CMGG/Ag/CMGG PSV prepared with the same condition. Considering the short spin diffusion length in CTA, this result indicates a better electronic band matching for the CTA/CMGG interface than the Ag/CMGG interface in agreement with the first-principle calculation results. (001)- and (011)-orientated CMGG/CTA/CMGG PSV show similar MR outputs, indicating that the CTA spacer suppresses the orientation dependence of MR output which is usually observed in Ag-spacer CPP-PSV.

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