Current noise in single-molecule junctions induced by electronic-vibrational coupling

Schinabeck C, Härtle R, Weber HB, Thoss M (2014)

Publication Type: Journal article, Letter

Publication year: 2014

Journal

Physical Review B American Physical Society

Publisher: American Physical Society

Book Volume: 90

Journal Issue: 7

DOI: 10.1103/PhysRevB.90.075409

Abstract

The influence of multiple vibrational modes on current fluctuations in electron transport through single molecule junctions is investigated. Our analysis is based on a generic model of a molecular junction, which comprises a single electronic state on the molecular bridge coupled to multiple vibrational modes and fermionic leads, and employs a master equation approach. The results reveal that in molecular junctions with multiple vibrational modes, already weak to moderate electronic-vibrational coupling may result in high noise levels, especially at the onset of resonant transport, in accordance with the experimental findings of Secker et al. [Phys. Rev. Lett. 106, 136807 (2011)]. The underlying mechanisms are analyzed in some detail.

Authors with CRIS profile

Christian Schinabeck Professur für Theoretische Physik mit dem Schwerpunkt Molekulare Materialien Rainer Härtle Interdisziplinäres Zentrum für Molekulare Materialien (ICMM) Heiko Weber Chair of Applied Physics (LAP) Michael Thoss Professur für Theoretische Physik mit dem Schwerpunkt Molekulare Materialien

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

How to cite

APA:

Schinabeck, C., Härtle, R., Weber, H.B., & Thoss, M. (2014). Current noise in single-molecule junctions induced by electronic-vibrational coupling. Physical Review B, 90(7). https://doi.org/10.1103/PhysRevB.90.075409

MLA:

Schinabeck, Christian, et al. "Current noise in single-molecule junctions induced by electronic-vibrational coupling." Physical Review B 90.7 (2014).

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