Adiabatic self-vibrations of a movable Cooper-pair box generated by inelastic Andreev tunneling
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866908954578124800 |
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| author | Park, Sunghun Parafilo, Anton V. Gorelik, Leonid Y. Shekhter, Robert I. |
| author_facet | Park, Sunghun Parafilo, Anton V. Gorelik, Leonid Y. Shekhter, Robert I. |
| contents | Self-sustained oscillators produce stable periodic motion robust to dissipation. Such motion is usually achieved by work fed back into the oscillator, but its performance is often limited by frequency-dependent operation. Here we propose a scheme for self-sustained vibrations without external feedback. We consider a movable Cooper-pair box attached to the free end of a voltage-biased normal-metal pillar. The Cooper-pair box carries an Andreev current subject to an electric field applied perpendicular to the current. In the adiabatic limit, where the Cooper-pair box state follows its motion, vibrational instability occurs, pumped by inelastic Andreev tunneling. Nonlinearity of the Josephson coupling saturates the vibrational amplitude, resulting in two-dimensional self-vibrations. We discuss the advantage of this adiabatic scheme in comparison with feedback-induced self-oscillation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_10041 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Adiabatic self-vibrations of a movable Cooper-pair box generated by inelastic Andreev tunneling Park, Sunghun Parafilo, Anton V. Gorelik, Leonid Y. Shekhter, Robert I. Mesoscale and Nanoscale Physics Superconductivity Self-sustained oscillators produce stable periodic motion robust to dissipation. Such motion is usually achieved by work fed back into the oscillator, but its performance is often limited by frequency-dependent operation. Here we propose a scheme for self-sustained vibrations without external feedback. We consider a movable Cooper-pair box attached to the free end of a voltage-biased normal-metal pillar. The Cooper-pair box carries an Andreev current subject to an electric field applied perpendicular to the current. In the adiabatic limit, where the Cooper-pair box state follows its motion, vibrational instability occurs, pumped by inelastic Andreev tunneling. Nonlinearity of the Josephson coupling saturates the vibrational amplitude, resulting in two-dimensional self-vibrations. We discuss the advantage of this adiabatic scheme in comparison with feedback-induced self-oscillation. |
| title | Adiabatic self-vibrations of a movable Cooper-pair box generated by inelastic Andreev tunneling |
| topic | Mesoscale and Nanoscale Physics Superconductivity |
| url | https://arxiv.org/abs/2604.10041 |