Multilayered Heater Nanocryotron: A Superconducting-Nanowire-Based Thermal Switch
Reza Baghdadi, Jason P. Allmaras, Brenden A. Butters, Andrew E. Dane, Saleem Iqbal, Adam N. McCaughan, Emily A. Toomey, Qing-Yuan Zhao, Alexander G. Kozorezov, Karl K. Berggren
DOI 10.1103/PhysRevApplied.14.054011 · Physical Review Applied
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Abstract
We demonstrate a multilayer nanoscale cryogenic heater-based switch (M-hTron) that uses a normal-metal heater overlapping a thin-film superconductor separated by a thin insulating layer. The M-hTron eliminates leakage current found in three-terminal superconducting switches and applies heat locally to the superconductor, reducing the energy required to switch the device. Modeling using the energy-balance equations and the acoustic mismatch model demonstrates reasonable agreement with experiment. The M-hTron is a promising device for digital superconducting electronics that require high fan-out and offers the possibility of enhancing readout for superconducting-nanowire single-photon detectors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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