Spintronics-based mesoscopic heat engine
Artikel i vetenskaplig tidskrift, 2012

We consider a nanowire suspended between two spin-polarized leads and subjected to a nonuniform magnetic field. We show that a temperature drop between the leads can significantly affect the nanowire dynamics. In particular, it is demonstrated that, under certain conditions, the stationary distribution of the mechanical subsystem has a Boltzmann form with an effective temperature, which is lower than the temperature of the "cold" lead; this seems rather counterintuitive. We also find that a change in the direction of the temperature gradient can result in the generation of mechanical vibrations rather than the heating of the mechanical subsystem.

systems

carbon nanotubes

Författare

Juan Atalaya

Chalmers, Teknisk fysik, Kondenserade materiens teori

Leonid Gorelik

Chalmers, Teknisk fysik, Kondenserade materiens teori

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 85 24 Article Number: 245309 -

Quantum Nanoelectromechanical Systems (QNEMS)

Europeiska kommissionen (FP7), 2009-09-01 -- 2012-08-31.

Ämneskategorier

Fysik

DOI

10.1103/PhysRevB.85.245309