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- Parafilo, A. V., et al.
(författare)
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Polaronic effects and thermally enhanced weak superconductivity
- 2014
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121. ; 89:11
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Tidskriftsartikel (refereegranskat)abstract
- We theoretically analyze the d.c Josephson current between two superconductors connected by a vibrating weak link. Assuming the weak link to be a ``quantum dot" we predict that the critical current is thermally enhanced at low temperatures if the electron-vibron interaction is strong and has an anomalous temperature dependence in a large temperature interval. We estimate that this unusual behavior, which occurs because the current through the weak link is carried by ``polaronic" Andreev states, is measurable in experiments on, e.g., carbon-nanotube based Josepshon junctions.
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