[14p-P10-1~98] 10 スピントロニクス・マグネティクス（ポスター）

▲ [14p-P10-3] Superconducting properties of the Nb/(In, Fe)As/Nb junctions under magnetic fields

〇中村 壮智¹、レ デゥック アイン²、橋本 義昭¹、大矢 忍^2,3、田中 雅明^2,3、勝本 信吾¹ (1.東大物性研、2.東大工、3.スピントロニクス学術連携研究教育センター)

キーワード：magnetic semiconductor, superconducting junction

We have studied superconducting junctions using an n-type ferromagnetic semiconductor (In,Fe)As. We have succeeded in fabricating several junctions which exhibit the zero-resistance state at 60 mK without external magnetic fields, indicating proximity induced supercurrent in the (In,Fe)As. The critical currents show hysteretic and unexpected field dependence attributable to magnetism of (In,Fe)As.