Spin-Orbit Torque in Magnetic Bilayers - Spintronics Theory Group
Spin-Orbit Torque in Magnetic Bilayers - Spintronics Theory Group Spin-Orbit Torque in Magnetic Bilayers - Spintronics Theory Group
Summary on Spin-‐Orbit Torques Spin Hall effect Rashba effect Torques Non-‐adiabaCc SHE Direct SHE Edelstein effect (ISGE) Intrinsic+non-‐adiabaCc D’yakonov-‐Perel anisotropic spin relaxaCon introduces angular dependence Transport Both contribute to anisotropic AMR+ AHE Next… Spin-‐pumping+SHE: anisotropic damping? Spin Swapping? Anisotropic Damping α ≈ α 0 +δα sin 2 θ Dzyaloshinskii-‐Moriya interacOon Rashba Torque in Domain wall 26
Outline I. Spin-‐Orbit Coupling Strikes Back AMR, AHE, SHE, Anisotropy, spin relaxa;on…and Torques II. What the spin is going on ? Spin Hall Spin Hall Torque, Spin Hall AMR & AHE, Spin Swapping? III. What the spin is going on ? Rashba Rashba torque, Dyakonov-‐Perel, Dzyalshinskii-‐Moriya and more IV. Dzyaloshinskii-‐Moriya InteracOon From Rashba to Dzyaloshinskii-‐Moriya to domain wall mo;on V. Spin-‐orbitronics with Magnons: The Magnonic DM Torque Marrying spin-‐orbitronics with spin caloritronics 27
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Outl<strong>in</strong>e<br />
I. <strong>Sp<strong>in</strong></strong>-‐<strong>Orbit</strong> Coupl<strong>in</strong>g Strikes Back <br />
AMR, AHE, SHE, Anisotropy, sp<strong>in</strong> relaxa;on…and <strong>Torque</strong>s <br />
II. What the sp<strong>in</strong> is go<strong>in</strong>g on ? <strong>Sp<strong>in</strong></strong> Hall <br />
<strong>Sp<strong>in</strong></strong> Hall <strong>Torque</strong>, <strong>Sp<strong>in</strong></strong> Hall AMR & AHE, <strong>Sp<strong>in</strong></strong> Swapp<strong>in</strong>g? <br />
III. What the sp<strong>in</strong> is go<strong>in</strong>g on ? Rashba <br />
Rashba torque, Dyakonov-‐Perel, Dzyalsh<strong>in</strong>skii-‐Moriya and more <br />
IV. Dzyalosh<strong>in</strong>skii-‐Moriya InteracOon <br />
From Rashba to Dzyalosh<strong>in</strong>skii-‐Moriya to doma<strong>in</strong> wall mo;on <br />
V. <strong>Sp<strong>in</strong></strong>-‐orbitronics with Magnons: The Magnonic DM <strong>Torque</strong> <br />
Marry<strong>in</strong>g sp<strong>in</strong>-‐orbitronics with sp<strong>in</strong> caloritronics <br />
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