Dresden 2026 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 28: Superconducting Electronics: SQUIDs and other Josephson Circuits and Components
TT 28.1: Vortrag
Dienstag, 10. März 2026, 09:30–09:45, CHE/0089
Gate-controlled switching in non-centrosymmetric superconducting devices - Large output voltage — •Jennifer Koch1, Leon Ruf1, Angelo Di Bernardo1,2, and Elke Scheer1 — 1Universität Konstanz, Konstanz, Germany — 2Università degli Studi di Salerno, Fisciano (SA), Italy
Gate-controlled supercurrent (GCS) devices have become of great interest as a superconducting equivalent to complementary metal-oxide-semiconductor (CMOS) logic. The underlying concept is based on the observation that supercurrent can be controlled electrically through the application of a gate voltage [1,2].
We investigate GCS devices made of the non-centrosymmetric superconductor Nb0.18Re0.82. By combining geometric adjustments with the material’s high normal-state resistivity, we achieve a significant increase of the output voltage. The resulting voltage is high enough to drive CMOS transistors, demonstrating the potential of GCS devices to interface directly with conventional semiconductor electronics. This finding represents an important step towards hybrid computing architectures.
[1] De Simoni et al., Nature Nanotech 13, 802 (2018)
[2] Paolucci et al., Nano Letters 18, 4195 (2018)
Keywords: superconductivity; gate-controlled supercurrent; non-centrosymmetric superconductor; superconducting logic