Spin-transfer torque: J_s > J_c ⇒ precessional switching of free-layer magnetisation

Layer 1 — Physicsin the spintronics subtree

Berger 1996 / Slonczewski 1996 spin-transfer torque: a spin-polarised current passing through a ferromagnetic free layer transfers angular momentum to its magnetisation, exerting a damping-like torque τ_STT = −(γℏ/2eM_sV)·J_s·m̂ × (m̂ ×…

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