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Title

Proximity nanovalve with large phase-tunable thermal conductance

AuthorsStrambini, Elia; Bergeret, F. S. CSIC ORCID; Giazotto, Francesco
Issue Date2014
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 105(8): 082601 (2014)
AbstractWe propose a phase-controlled heat-flux quantum valve based on the proximity effect driven by a superconducting quantum interference proximity transistor (SQUIPT). Its operation relies on the phase-dependent quasiparticle density of states in the Josephson weak-link of the SQUIPT which controls thermal transport across the device. In a realistic Al/Cu-based setup the structure can provide efficient control of thermal current inducing temperature swings exceeding ∼ 100 mK, and flux-to-temperature transfer coefficients up to ∼ 500 mK/Φ 0 below 100 mK. The nanovalve performances improve by lowering the bath temperature, making the proposed structure a promising building-block for the implementation of coherent caloritronic devices operating below 1 K.
Publisher version (URL)http://dx.doi.org/10.1063/1.4893759
URIhttp://hdl.handle.net/10261/137081
DOI10.1063/1.4893759
Identifiersdoi: 10.1063/1.4893759
issn: 0003-6951
e-issn: 1077-3118
Appears in Collections:(CFM) Artículos




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