Model for the spin-dependent Seebeck coefficient of InSb in a magnetic field

Nicholas A. Pike and David Stroud
Phys. Rev. B 90, 174435 – Published 25 November 2014

Abstract

We develop a simple theory for the spin-dependent Seebeck effect in n-doped InSb in an external magnetic field. We consider spin-1/2 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 B; the peak positions are approximately periodic in 1/B. The oscillations arise when the Fermi energy crosses the bottom of a Landau band.

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  • Received 22 September 2014
  • Revised 29 October 2014

DOI:https://doi.org/10.1103/PhysRevB.90.174435

©2014 American Physical Society

Authors & Affiliations

Nicholas A. Pike* and David Stroud

  • Department of Physics, The Ohio State University, Columbus, Ohio 49210, USA

  • *Pike.55@osu.edu

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Issue

Vol. 90, Iss. 17 — 1 November 2014

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