Energy balance and heat exchange in mesoscopic systems

Lake, Roger; Datta, Supriyo

doi:10.1103/physrevb.46.4757

Cited by 82 publications

(73 citation statements)

References 16 publications

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“…Detailed discussion of the inelastic transport in molecular junctions can be found in Refs. 5,6. Theoretical description of IETS is well established today both within simple models 7,8,9,10,11,12 and more realistic calculations. 13,14,15,16,17,18 Ability to predict quantitatively experimental findings is a sign of maturity of the field.…”

Section: Introductionmentioning

confidence: 99%

Inelastic transport in the Coulomb blockade regime within a nonequilibrium atomic limit

2008

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Method developed by Sandalov and coworkers [Int. J. Quant. Chem. 94, 113 (2003)] is applied to inelastic transport in the case of strong correlations on the molecule, which is relatively weakly coupled to contacts. Ability of the approach to deal with the transport in the language of manybody molecular states as well as take into account charge-specific normal modes and nonadiabatic couplings is stressed. We demonstrate capabilities of the technique within simple model calculations, and compare it to previously published approaches.

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Section: Introductionmentioning

confidence: 99%

Inelastic transport in the Coulomb blockade regime within a nonequilibrium atomic limit

2008

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“…This model is similar to those used by us earlier [2][3][4] to study the effect of coupling to a phonon bath on the nature of the conduction process, in particular interplay between tunneling, activation and hopping transmission processes. Lake and Datta 15,16 have used a different approach based on the non-equilibrium Green's function formalism to study heat release in junction characterized by simple barrier or double barrier structures.…”

Section: Introductionmentioning

confidence: 99%

Heating in current carrying molecular junctions

Segal

Nitzan

2002

The Journal of Chemical Physics

118

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A framework for estimating heating and expected temperature rise in current carrying molecular junctions is described. Our approach is based on applying the Redfield approximation to a tight binding model for the molecular bridge supplemented by coupling to a phonon bath. This model, used previously to study thermal relaxation effects on electron transfer and conduction in molecular junctions, is extended and used to evaluate the fraction of available energy, i.e. of the potential drop, that is released as heat on the molecular bridge. Classical heat conduction theory is then applied to estimate the expected temperature rise. For a reasonable choice of molecular parameters and for junctions carrying currents in the nA range, we find the temperature rise to be a modest few degrees. It is argued, however, that using classical theory to describe heat transport away from the junction may underestimate the heating effect.

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“…II, we study the heat dissipation in current-carrying 1D atomic junctions 18,25,26,27,28,29,30,31 . In the presence of potential difference between the two leads, there will be electrical current flowing between them.…”

Section: Heat Generation In Current Carrying 1d Atomic Junctionsmentioning

confidence: 99%

Coupled electron and phonon transport in one-dimensional atomic junctions

2007

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Employing the nonequilibrium Green's function method, we develop a fully quantum mechanical model to study the coupled electron-phonon transport in one-dimensional atomic junctions in the presence of a weak electron-phonon interaction. This model enables us to study the electronic and phononic transport on an equal footing. We derive the electrical and energy currents of the coupled electron-phonon system and the energy exchange between them. As an application, we study the heat dissipation in current carrying atomic junctions within the self-consistent Born approximation, which guarantees energy current conservation. We find that the inclusion of phonon transport is important in determining the heat dissipation and temperature change of the atomic junctions.

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Energy balance and heat exchange in mesoscopic systems

Cited by 82 publications

References 16 publications

Inelastic transport in the Coulomb blockade regime within a nonequilibrium atomic limit

Inelastic transport in the Coulomb blockade regime within a nonequilibrium atomic limit

Heating in current carrying molecular junctions

Coupled electron and phonon transport in one-dimensional atomic junctions

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