Thermospin effects in a quantum dot connected to ferromagnetic leads

Yonatan Dubi, Massimiliano Di Ventra

Research output: Contribution to journalArticlepeer-review

163 Scopus citations

Abstract

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
Volume79
Issue number8
DOIs
StatePublished - 27 Feb 2009
Externally publishedYes

Fingerprint

Dive into the research topics of 'Thermospin effects in a quantum dot connected to ferromagnetic leads'. Together they form a unique fingerprint.

Cite this