Classical nernst engine

Julian Stark, Kay Brandner, Keiji Saito, Udo Seifert

Research output: Contribution to journalArticle

30 Citations (Scopus)


We introduce a simple model for an engine based on the Nernst effect. In the presence of a magnetic field, a vertical heat current can drive a horizontal particle current against a chemical potential. For a microscopic model invoking classical particle trajectories subject to the Lorentz force, we prove a universal bound 3-22≃0.172 for the ratio between the maximum efficiency and the Carnot efficiency. This bound, as the slightly lower one 1/6 for efficiency at maximum power, can indeed be saturated for a large magnetic field and small fugacity.

Original languageEnglish
Article number140601
JournalPhysical review letters
Issue number14
Publication statusPublished - 2014 Apr 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Stark, J., Brandner, K., Saito, K., & Seifert, U. (2014). Classical nernst engine. Physical review letters, 112(14), [140601].