[11p-M101-1~7] CS.9 10.1 新物質・新機能創成（作製・評価技術）, 10.2 スピン基盤技術・萌芽的デバイス技術, 10.3 スピンデバイス・磁気メモリ・ストレージ技術,10.4 半導体スピントロニクス・超伝導・強相関のコードシェアセッション

▲ [11p-M101-3] Spin-orbit torque in ionic crystal ReO_X

〇Shutaro Karube^1,2、Daichi Sugawara¹、Makoto Kohda^1,2,3、Junsaku Nitta^1,2,3 (1.Tohoku Univ. Eng.、2.Tohoku Univ. CSRN、3.Tohoku Univ. CSIS)

キーワード：Spin-orbit torque, Ionic crystal

Spin-orbit torque (SOT) generated by spin Hall effect (SHE) or Edelstein effect has a possibility to efficiently perform magnetization switching of ferromagnets for spintronic devices. The generation of the SOT via the SHE are attributed to electron scattering in materials. Especially phonon scattering plays an important role for the generation at room temperature. SHE has been energetically studied in heavy metals such as Ta, Pt and W in which acoustic phonon induces the scattering so far. While optical phonon would also cause it in the same way. It is important to investigate the contribution of optical phonon scattering for unveiling the SOT generation mechanism.Based on the background, we studied the generation of the SOT in ionic crystal ReO_X which is conductive and would have the contribution of the optical phonon by means of spin-torque ferromagnetic resonance. We will discuss the contribution for the SOT in this presentation.