Molecular transport junctions: vibrational effects

Galperin, Michael; Ratner, Mark A.; Nitzan, Abraham

doi:10.1088/0953-8984/19/10/103201

Cited by 763 publications

(988 citation statements)

References 492 publications

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“…Molecules are 'flexible' objects, and can, for instance, undergo conformational changes that can strongly affect transport behavior [54][55][56]; vibrational modes lie typically between a few meV to tens of hundreds of meV for free molecules. Inelastic effects in molecular junctions originate from coupling between electronic and nuclear degrees of freedom [57][58][59][60][61][62].…”

Section: Vibrational Effectsmentioning

confidence: 99%

Single-molecule transport in three-terminal devices

Osorio

Bjørnholm

Lehn

et al. 2008

J. Phys.: Condens. Matter

103

114

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Transport through single molecules has been studied using different test beds. In this paper we focus on three-terminal devices in which a molecule bridges the gap between two gold electrodes and a third electrode-the gate-is able to modulate the conduction properties of the junction. Depending on the electronic coupling, , between the molecule and the gold electrodes, different transport regimes can be distinguished. We show measurements on junctions incorporating different single-molecule systems which demonstrate the distinction between these regimes, as well as the experimental limitations in controlling the exact value of .

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Section: Vibrational Effectsmentioning

confidence: 99%

Single-molecule transport in three-terminal devices

Osorio

Bjørnholm

Lehn

et al. 2008

J. Phys.: Condens. Matter

103

114

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“…formations leads to numerous novel quantum transport phenomena that go beyond the physics observed in other nanosized objects such as quantum dots [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. An essential requirement for electric circuits of nanoscale dimensions is a molecular device that can be switched between two distinct conductive states.…”

mentioning

confidence: 99%

Current-induced conformational switching in single-molecule junctions

et al. 2008

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“…For this purpose, one may use diagrammatic technique or nonequilibrium Green's function formalism (NEGF), as described in the review [30]. However, application of these advanced formalisms to realistic models simulating molecular junctions is extremely difficult.…”

Section: Introductionmentioning

confidence: 99%

Scattering theory of thermocurrent in quantum dots and molecules

Zimbovskaya

2015

Physica E: Low-dimensional Systems and Nanostructures

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In this work we theoretically study properties of electric current driven by a temperature gradient through a quantum dot/molecule coupled to the source and drain charge reservoirs. We analyze the effect of Coulomb interactions between electrons on the dot/molecule and of thermal phonons associated with the electrodes thermal environment on the thermocurrent. The scattering matrix formalism is employed to compute electron transmission through the system. This approach is further developed and combined with nonequilibrium Green's functions formalism, so that scattering probabilities are expressed in terms of relevant energies including the thermal energy, strengths of coupling between the dot/molecule and charge reservoirs and characteristic energies of electronphonon interactions in the electrodes. It is shown that one may bring the considered system into regime favorable for heat-to-electric energy conversion by varying the applied bias and gate voltages.

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Molecular transport junctions: vibrational effects

Cited by 763 publications

References 492 publications

Single-molecule transport in three-terminal devices

Single-molecule transport in three-terminal devices

Current-induced conformational switching in single-molecule junctions

Scattering theory of thermocurrent in quantum dots and molecules

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