Thermospin effects in a quantum dot connected to ferromagnetic leads

Yonatan Dubi, Massimiliano Di Ventra

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168 Scopus citations
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We study a system composed of a quantum dot in contact with ferromagnetic leads held at different temperatures. Spin analogs to the thermopower and thermoelectric figure of merit are defined and studied as a function of junction parameters. It is shown that in contrast to bulk ferromagnets, the spin-thermopower coefficient in a junction can be as large as the Seebeck coefficient, resulting in a large spin figure of merit. In addition, it is demonstrated that the junction can be tuned to supply only spin current but no charge current. We also discuss experimental systems where our predictions can be verified.

Original languageEnglish
Article number081302
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number8
StatePublished - 27 Feb 2009
Externally publishedYes


  • cond-mat.mes-hall

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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