Report
Josephson effect in superconductor-normal dot-superconductor junctions driven out of equilibrium by quasiparticle injection
| العنوان: | Josephson effect in superconductor-normal dot-superconductor junctions driven out of equilibrium by quasiparticle injection |
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| المؤلفون: | Sankar, Sarath, Meyer, Julia S., Houzet, Manuel |
| المصدر: | Phys. Rev. B 105, 134515 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | We study theoretically the large variations of the supercurrent through a normal dot that are induced by a small quasiparticle injection current from normal leads connected to the dot. We find that the supercurrent decomposes into a subgap contribution, which depends on the voltages applied to the normal leads, as well as a contribution with opposite sign from energies outside the gap, which is insensitive to the voltages. As the voltages gradually suppress the subgap contribution, a critical voltage exists above which the contribution from energies outside the gap dominates, leading to a sign reversal of the current-phase relation, namely a transition to a so-called $\pi$-junction behavior. We determine the critical voltage and analyze the robustness of the effect with respect to temperature and inelastic relaxation in the dot. Comment: 15 pages, 14 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.105.134515 |
| URL الوصول: | http://arxiv.org/abs/2201.04602 |
| رقم الانضمام: | edsarx.2201.04602 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.105.134515 |
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