Abstract
We carried out a concerted effort to determine the absolute sign of the inverse spin Hall effect voltage generated by spin currents injected into a normal metal. We focus on yttrium iron garnet (YIG)|platinum bilayers at room temperature, generating spin currents by microwaves and temperature gradients. We find consistent results for different samples and measurement setups that agree with theory. We suggest a right-hand-rule to define a positive spin Hall angle corresponding to the voltage expected for the simple case of scattering of free electrons from repulsive Coulomb charges.
Original language | English |
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Article number | 025001 |
Journal | Journal of Physics D: Applied Physics |
Volume | 48 |
Issue number | 2 |
DOIs | |
State | Published - 21 Jan 2015 |
Keywords
- Spin Hall effect
- Spin pumping
- Spin Seebeck effect