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*

*この研究の対応する著者

研究成果: Article査読

12 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(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.

本文言語English
論文番号093911
ジャーナルJournal of Applied Physics
119
9
DOI
出版ステータスPublished - 2016 3 7
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Current-perpendicular-to-plane giant magnetoresistive properties in Co<sub>2</sub>Mn(Ge<sub>0.75</sub>Ga<sub>0.25</sub>)/Cu<sub>2</sub>TiAl/Co<sub>2</sub>Mn(Ge<sub>0.75</sub>Ga<sub>0.25</sub>) 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。

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