Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems

Schinabeck C, Erpenbeck A, Haertle R, Thoss M (2016)


Publication Type: Journal article

Publication year: 2016

Journal

Book Volume: 94

Article Number: 201407

Journal Issue: 20

DOI: 10.1103/PhysRevB.94.201407

Abstract

Within the hierarchical quantum master equation (HQME) framework, an approach is presented, which allows a numerically exact description of nonequilibrium charge transport in nanosystems with strong electronic-vibrational coupling. The method is applied to a generic model of vibrationally coupled transport considering a broad spectrum of parameters ranging from the nonadiabatic to the adiabatic regime and including both resonant and off-resonant transport. We show that nonequilibrium effects are important in all these regimes. In particular, in the off-resonant transport regime, the inelastic cotunneling signal is analyzed for a vibrational mode in full nonequilibrium, revealing a complex interplay of different transport processes and deviations from the commonly used G0/2 rule of thumb. In addition, the HQME approach is used to benchmark approximate master equation and nonequilibrium Green's function methods.

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APA:

Schinabeck, C., Erpenbeck, A., Haertle, R., & Thoss, M. (2016). Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems. Physical Review B, 94(20). https://dx.doi.org/10.1103/PhysRevB.94.201407

MLA:

Schinabeck, Christian, et al. "Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems." Physical Review B 94.20 (2016).

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