Open AccessNon-equilibrium slave bosons approach to quantum pumping in interacting quantum dots
Author(s) -
Roberta Citro,
Francesco Romeo
Publication year - 2016
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/696/1/012014
Subject(s) - boson , physics , quantum dot , spintronics , spin (aerodynamics) , charge (physics) , quantum , quantum mechanics , function (biology) , spin pumping , statistical physics , condensed matter physics , spin polarization , spin hall effect , electron , evolutionary biology , ferromagnetism , biology , thermodynamics
We review a time-dependent slave bosons approach within the non-equilibrium Green's function technique to analyze the charge and spin pumping in a strongly interacting quantum dot. We study the pumped current as a function of the pumping phase and of the dot energy level and show that a parasitic current arises, beyond the pure pumping one, as an effect of the dynamical constraints. We finally illustrate an all-electrical mean for spin-pumping and discuss its relevance for spintronics applications