Phase-controlled superconducting heat-flux quantum modulator
arXiv:1205.2973 · doi:10.1063/1.4750068
Abstract
We theoretically put forward the concept of a phase-controlled superconducting heat-flux quantum modulator. Its operation relies on phase-dependent heat current predicted to occur in temperature-biased Josephson tunnel junctions. The device behavior is investigated as a function of temperature bias across the junctions, bath temperature, and junctions asymmetry as well. In a realistic Al-based setup the structure could provide temperature modulation amplitudes up to ~50 mK with flux-to-temperature transfer coefficients exceeding ~125 mK/Phi_0 below 1 K, and temperature modulation frequency of the order of a few MHz. The proposed structure appears as a promising building-block for the implementation of novel-concept caloritronic devices operating at cryogenic temperatures.
4+ pages, 5 color figures
References in corpus (10)
- Single-mode heat conduction by photons
- Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration
- Single mode heat rectifier: Controlling energy flow between electronic conductors
- Thermal rectification in nonlinear quantum circuits
- Mesoscopic photon heat transistor
- Quasiparticle relaxation in optically excited high-Q superconducting resonators
- Recombination limited energy relaxation in a BCS superconductor
- Normal metal - superconductor tunnel junction as a Brownian refrigerator
- Magnetically Induced Thermal Rectification
- Phase Modulated Thermal Conductance of Josephson Weak Links