Charge solitons and their dynamical mass in 1-D arrays of Josephson junctions

Details Charge solitons and their dynamical mass in 1-D arrays of Josephson junctions Charge solitons and their dynamical mass in 1-D arrays of Josephson junctions

2010-08-30

arxiv.org/abs/1008.5123v1

Phys. Rev. B 83, 064517 (2011)

Physics

Condensed Matter

Superconductivity

10 pages, 10 figures

Scientific paper

10.1103/PhysRevB.83.064517

We investigate the charge transport in one-dimensional arrays of Josephson junctions. In the interesting regime of "small charge solitons" (polarons), the charge dynamics is strongly influenced by the polaronic effects, i.e., by dressing of a Cooper pair by charge dipoles. In particular, the soliton's mass in this regime scales approximately as inverse square of the Josephson energy. We employ two theoretical techniques: the many body tight-binding approach and the mean-field approach. Results of the two approaches agree in the regime of "small charge solitons".

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