Thermal superconducting quantum interference proximity transistor

Abstract

Superconductors are known to be excellent thermal insulators at low temperature owing to the presence of the energy gap in their density of states (DOS). In this context, the superconducting \textit{proximity effect} allows to tune the local DOS of a metallic wire by controlling the phase bias ($\phi$) imposed across it. As a result, the wire thermal conductance can be tuned over several orders of magnitude by phase manipulation. Despite strong implications in nanoscale heat management, experimental proofs of phase-driven control of thermal transport in superconducting proximitized nanostructures are still very limited. Here, we report the experimental demonstration of efficient heat current control by phase tuning the superconducting proximity effect. This is achieved by exploiting the magnetic flux-driven manipulation of the DOS of a quasi one-dimensional aluminum nanowire forming a weal-link embedded in a superconducting ring. Our thermal superconducting quantum interference transistor (T-SQUIPT) shows temperature modulations up to $\sim 16$ mK yielding a temperature-to-flux transfer function as large as $\sim 60$ mK/${\Phi }_0$. Yet, phase-slip transitions occurring in the nanowire Josephson junction induce a hysteretic dependence of its local DOS on the direction of the applied magnetic field. Thus, we also prove the operation of the T-SQUIPT as a phase-tunable \textit{thermal memory}, where the information is encoded in the temperature of the metallic mesoscopic island. Besides their relevance in quantum physics, our results are pivotal for the design of innovative coherent caloritronics devices such as heat valves and temperature amplifiers suitable for thermal logic architectures.

arXiv comment15 pages, 10 figures

References in corpus (36)

• Energy Dissipation and Transport in Nanoscale Devices
• Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
• Fundamental aspects of steady-state conversion of heat to work at the nanoscale
• Observation of half-integer thermal Hall conductance
• Thermoelectric energy harvesting with quantum dots
• Superconductivity in one dimension
• Random-matrix theory of Majorana fermions and topological superconductors
• Hybrid superconducting-magnetic memory device using competing order parameters
• The Josephson heat interferometer
• Controllable 0-pi Josephson junctions containing a ferromagnetic spin valve
• Phase-slip flux qubits
• Density of states in a superconductor carrying a supercurrent
• Towards phase-coherent caloritronics in superconducting circuits
• SQUIPT - Superconducting Quantum Interference Proximity Transistor
• Phase Dependent Thermopower in Andreev Interferometers
• Nonlinear thermoelectricity with electron-hole symmetric systems
• Negative differential thermal conductance and heat amplification in superconducting hybrid devices
• Phase-Tunable Thermal Logic: Computation with Heat
• Josephson thermal memory
• 0-$\pi$ phase-controllable $thermal$ Josephson junction
• Highly-sensitive superconducting quantum interference proximity transistor
• Deterministic phase slips in mesoscopic superconducting rings
• Photonic heat rectification in a coupled qubits system
• Quantitative measurements of the thermal resistance of Andreev interferometers
• A superconducting nonlinear thermoelectric heat engine
• Preliminary demonstration of a persistent Josephson phase-slip memory cell with topological protection
• Phase-tunable thermal rectification in the topological SQUIPT
• Electron energy relaxation by phonons in the Kondo condensate
• Phase-coherent caloritronics with ordinary and topological Josephson junctions
• Topological Josephson Heat Engine
• Proximity nanovalve with large phase-tunable thermal conductance
• Phase-driven collapse of the Cooper condensate in a nanosized superconductor
• Low-temperature characterization of Nb-Cu-Nb weak links with Ar ion-cleaned interfaces
• Phase-Tunable Temperature Amplifier
• Spectral characteristics of a fully-superconducting SQUIPT
• High operating temperature in V-based superconducting quantum interference proximity transistors

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• Picosecond transfer from short-term to long-term memory in analog antiferromagnetic memory device
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