Molecular Transport Junctions: Vibrational Effects
Michael Galperin (1), Mark A. Ratner (1), Abraham Nitzan (2) ((1), Department of Chemistry, Northwestern University (2) School of Chemistry, Tel, Aviv University, Israel)
TL;DR
This paper reviews the theoretical and experimental understanding of vibrational effects in molecular transport junctions, covering electron-phonon interactions, inelastic tunneling spectroscopy, and heat conduction phenomena.
Contribution
It provides a comprehensive overview of current models, computational methods, and experimental insights into vibrational influences on electron transport in molecular junctions.
Findings
Vibrational effects significantly influence electron transport properties.
Inelastic tunneling spectroscopy reveals vibrational modes affecting conductance.
Heat generation and conduction are critical for junction stability.
Abstract
Introduction (2) Experimental background: Test beds (8) Theoretical approaches: A microscopic model(10) The electron-phonon coupling(14)Time and energy scales(15) Theoretical methods(19)Numerical calculations(28) Incoherent vs. coherent transport (28) Inelastic tunneling spectroscopy: Experimental background(31) Theoretical considerations:the weak coupling limit(36) Theoretical considerations: moderately strong coupling(41)Comparison of approximation schemes(48)Asymmetry in IETS(51)The origin of dips in IETS signals(53)Computational approaches (56) Effects of electron-electron(e-e)interactions (63) Noise (66) Non-linear conductance phenomena (73) Heating and heat conduction: General considerations(77) Heat generation(81) Heat conduction(85) Junction temperature(88) Current induced reactions (91) Summary and outlook (91)
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