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
Metallic surfaces II. What the spin is going on ? Rashba a. Interfacial Band Structure Au surface Gd/GdO interface Bi surface E. Rashba LaShell PRL 1996 Kuprin PRB 2005 Ast PRL 2007 Huge Rashba splibng at heavy metal surface!! What happens at heavy metal/ferromagnet interfaces? 20
II. What the spin is going on ? Rashba a. Interfacial Band Structure CollaboraCon: U. Schwingenschlogl; S. Grytsyuk (KAUST) Noble Metal/Ferromagnet S. Grytsyuk M=-‐M x x M=+M x x k y ( σ )⋅ ˆk Ĥ = ε ( ˆk ) ⇒ Ĥ ≈ ε ( ˆk ) +α R ẑ × ˆ See Park, Kim, Lee & Han, Phys. Rev. B 87, 041301(R) 2013 21
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- Page 5 and 6: 1 st International Workshop on Spin
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II. What the sp<strong>in</strong> is go<strong>in</strong>g on ? Rashba <br />
a. Interfacial Band Structure <br />
CollaboraCon: U. Schw<strong>in</strong>genschlogl; S. Grytsyuk (KAUST) <br />
Noble Metal/Ferromagnet <br />
S. Grytsyuk <br />
M=-‐M x x <br />
M=+M x x <br />
k y <br />
( σ )⋅ ˆk<br />
Ĥ = ε ( ˆk ) ⇒ Ĥ ≈ ε ( ˆk ) +α R ẑ × ˆ<br />
See Park, Kim, Lee & Han, Phys. Rev. B 87, 041301(R) 2013 <br />
21
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