Electronic friction in interacting systems
Abstract
We consider effects of strong light-matter interaction on electronic friction in molecular junctions within generic model of single molecule nano cavity junction. Results of the Hubbard NEGF simulations are compared with mean-field NEGF and generalized Head-Gordon and Tully approaches. Mean-field NEGF is shown to fail qualitatively at strong intra-system interactions, while accuracy of the generalized Head-Gordon and Tully results is restricted to situations of well separated intra-molecular excitations, when bath induced coherences are negligible. Numerical results show effects of bias and cavity mode pumping on electronic friction. We demonstrate non-monotonic behavior of the friction on the bias and intensity of the pumping field and indicate possibility of engineering friction control in single molecule junctions.
Keywords
Cite
@article{arxiv.1904.06781,
title = {Electronic friction in interacting systems},
author = {Feng Chen and Kuniyuki Miwa and Michael Galperin},
journal= {arXiv preprint arXiv:1904.06781},
year = {2019}
}
Comments
19 pages, 4 figures