Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 10, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4750068
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Funding
- FP7 program MICROKELVIN
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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 similar to 50 mK with flux-to-temperature transfer coefficients exceeding similar to 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 caloritronic devices operating at cryogenic temperatures. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4750068]
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