[23p-D316-1~17] 13.6 Nanostructures, quantum phenomena, and nano quantum devices

[23p-D316-9] Crystal control of spin pumping effect in Sb₂Te₃

〇Misako Morota¹, Yuta Saito¹, Noriyuki Uchida¹ (1.AIST)

Keywords:phase change material, calcogenaide, topological insulator

Chalcogenide materials used in phase-change memory have strong spin-orbit interaction, and the possibility of controlling the spin properties by using reversible phase change is expected. In this study, we focused on Sb₂Te₃, which is a typical chalcogenide phase change material, and investigated the spin pumping effect in bilayer stacked films of Sb₂Te₃ and ferromagnetic CoFeB by changing the crystal state of Sb₂Te₃. In this talk, we will discuss the relationship between the crystallinity of Sb₂Te₃ and the spin generation efficiency from the results.