アンドレーフ反射によるLa_<0.7>Sr_<0.3>MnO_3界面スピン分極率の測定(薄膜)

概要

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To develop a new versatile technique for determining the interfacial spin polarization of ferromagnetic materials, we examined Andreev reflection measurements by using superconducting NbN junctions. In this article, we report measurements and analysis of spin polarization of La_<0.7>Sr_<0.3>MnO_3 film at the interface. We found that the spin polarization of La_<0.7>Sr_<0.3>MnO_3 film strongly depends on the cooling condition of La_<0.7>Sr_<0.3>MnO_3 film after deposition. The maximum spin polarization of La_<0.7>Sr_<0.3>MnO_3 film was 0.77±0.02.
社団法人日本磁気学会の論文
2006-05-01