Towards Holographic Spintronics

Understand

We study transport phenomena of total angular momentum in holography, as a first step toward holographic understanding of spin transport phenomena.

• Spin current, which has both the local Lorentz index for spins and the space-time vector index for current, couples naturally to the bulk spin connection.
• Therefore the bulk spin connection becomes the source for the boundary spin current.
• This allows us to evaluate the spin current holographically, with a relation to the stress tensor and metric fluctuations in the bulk.