Magnon-driven quantum-dot heat engine

2012/06/30 by Björn Sothmann, Markus Büttiker · 4 citations
Computer Science · Physics and Astronomy · #Antiparallel (mathematics) #Charge (physics) #Ferromagnetism #Heat current #Heat engine #Mechanical and Optical Resonators #Power (physics) #Quantum and electron transport phenomena #Quantum-Dot Cellular Automata #Voltage #cond-mat.mes-hall

paper · pdf · doi:10.1209/0295-5075/99/27001

published as EPL 99 (2012) 27001 · 6 pages, 4 figures, published version, selected as Editor's choice

openalex publication_date 2012/07/01 · arxiv created 2012/07/18 · arxiv updated 2012/07/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We investigate a heat to charge current converter consisting of a single-level quantum dot coupled to two ferromagnetic metals and one ferromagnetic insulator held at different temperatures. We demonstrate that this nanoengine can act as an optimal heat to spin-polarized charge current converter in an antiparallel geometry, while it acts as a heat to pure spin current converter in the parallel case. We discuss the maximal output power of the device and its efficiency.

Citations

• Three-terminal thermoelectric transport under broken time-reversal symmetry
• Universality of Efficiency at Maximum Power
• Efficiency at maximum power: An analytically solvable model for stochastic heat engines
• Theory of transport through quantum-dot spin valves in the weak-coupling regime
• Thermoelectric efficiency at maximum power in a quantum dot
• Reciprocal Relations in Irreversible Processes. I.

Cited by

• Correlations of heat and charge currents in quantum-dot thermoelectric engines
• Energy transmutation in nonequilibrium quantum systems
• Single-molecule-mediated heat current between an electronic and a bosonic bath
• Lipkin-Meshkov-Glick model in a quantum Otto cycle