[14p-2J-5~18] 10.2 スピントルク・スピン流・回路・測定技術

△ [14p-2J-5] コーン磁化自由層をもつスピンバルブ・ナノピラー素子における高速スピントランスファトルク・スイッチング

〇松本 利映¹、荒井 礼子^2,1、湯浅 新治¹、今村 裕志¹ (1.産総研、2.PRESTO, JST)

キーワード：スピントロニクス、MRAM、スピントランスファトルク

Spin-transfer-torque switching in a spin-valve nanopillar with a conically magnetized free layer (c-FL) was theoretically studied using the macrospin model. The c-FL is shown to have advantages such as a low switching current density and short switching time compared with a perpendicularly magnetized free layer (p-FL). A c-FL with a thermal stability of 60k_BT exhibited a switching current density 22% smaller and a switching time 60% shorter than those of a p-FL with the same thermal stability.