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Updated: May 25, 2026
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
Quasiparticle relaxation mechanisms in superconductor/ferromagnet bilayers
Carmine Attanasio1, Carla Cirillo
1CNR-SPIN Salerno and Dipartimento di Fisica E R Caianiello, Università degli Studi di Salerno, Fisciano (Sa), Italy. attanasio@sa.infn.it
Summary
This study reviews dynamic instabilities in superconducting/ferromagnetic (S/F) structures. Understanding quasiparticle relaxation times is key for developing ultrafast superconducting single-photon detectors.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Superconducting/ferromagnetic (S/F) hybrid structures exhibit complex non-equilibrium properties.
- Dynamic instabilities of the vortex lattice are observed at high driving currents.
Purpose of the Study:
- To review recent findings on S/F structures concerning vortex lattice instabilities.
- To analyze the influence of ferromagnetic and superconducting materials on non-equilibrium properties.
- To investigate the role of quasiparticle relaxation times (τ(E)) and their temperature dependence.
Main Methods:
- Review of recent experimental results on S/F structures.
- Analysis of dynamic instabilities in the vortex lattice.
- Focus on measuring and understanding quasiparticle relaxation times.
Main Results:
- Recent results on dynamic instabilities in S/F structures are presented.
- The impact of material choice on non-equilibrium properties is discussed.
- The temperature dependence of quasiparticle relaxation times is highlighted.
Conclusions:
- Knowledge of relaxation mechanisms is crucial for S/F hybrid applications.
- Optimal material selection can lead to advanced devices.
- Ultrafast superconducting single-photon detectors are a potential application.
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