Abstract
We develop a simple theory for the spin-dependent Seebeck effect in -doped InSb in an external magnetic field. We consider spin- electrons in the conduction band of InSb with a temperature gradient parallel to the applied magnetic field. In the absence of spin-orbit interactions, a Boltzmann equation approach leads to a spin current parallel to the field and proportional to the temperature gradient. The calculated spin-dependent Seebeck coefficient oscillates as a function of magnetic field ; the peak positions are approximately periodic in . The oscillations arise when the Fermi energy crosses the bottom of a Landau band.
- Received 22 September 2014
- Revised 29 October 2014
DOI:https://doi.org/10.1103/PhysRevB.90.174435
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