Fluctuation theorems for capacitively coupled electronic currents

Cuetara, Gregory Bulnes; Esposito, Massimiliano; Gaspard, Pierre

doi:10.1103/PhysRevB.84.165114

Reference : Fluctuation theorems for capacitively coupled electronic currents


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/11945

Title :	Fluctuation theorems for capacitively coupled electronic currents
Language :	English
Author, co-author :	Cuetara, Gregory Bulnes [Université Libre de Bruxelles - ULB > Center for Nonlinear Phenomena and Complex Systems]
	Esposito, Massimiliano [Université Libre de Bruxelles - ULB > Center for Nonlinear Phenomena and Complex Systems]
	Gaspard, Pierre [Université Libre de Bruxelles - ULB > Center for Nonlinear Phenomena and Complex Systems]
Publication date :	14-Oct-2011
Journal title :	Physical Review B
Volume :	84
Issue/season :	16
Peer reviewed :	Yes (verified by ORBi^lu)
Audience :	International
ISSN :	1098-0121
Abstract :	[en] The counting statistics of electron transport is studied theoretically in a system with two capacitively coupled parallel transport channels. Each channel is composed of a quantum dot connected by tunneling to two reservoirs. The nonequilibrium steady state of the system is controlled by two affinities or thermodynamic forces, each one determined by the two reservoirs of each channel. The status of a single-current fluctuation theorem is investigated starting from the fundamental two-current fluctuation theorem, which is a consequence of microreversibility.We show that the single-current fluctuation theorem holds in the limit of a large Coulomb repulsion between the two parallel quantum dots, as well as in the limit of a large current ratio between the parallel channels. In this latter limit, the symmetry relation of the single-current fluctuation theorem is satisfied with respect to an effective affinity that is much lower than the affinity determined by the reservoirs. This backaction effect is characterized quantitatively.
Permalink :	http://hdl.handle.net/10993/11945
DOI :	10.1103/PhysRevB.84.165114
Other URL :	<Go to ISI>://WOS:000297725700001
Commentary :	Times Cited: 10 Journal Article

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