Symmetry and environment effects on rectification mechanisms in quantum pumps

Details Symmetry and environment effects on rectification mechanisms in quantum pumps Symmetry and environment effects on rectification mechanisms in quantum pumps

2005-09-06

arxiv.org/abs/cond-mat/0509129v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

To appear as Rapid Communication in PRB

Scientific paper

10.1103/PhysRevB.72.121306

We consider a paradigmatic model of quantum pumps and discuss its
rectification properties in the framework of a symmetry analysis proposed for
ratchet systems. We discuss the role of the environment in breaking
time-reversal symmetry and the possibility of a finite directed current in the
Hamiltonian limit of annular systems.

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