TY - JOUR
T1 - Gate-Tunable Kinetic Inductance in Proximitized Nanowires
AU - Splitthoff, Lukas Johannes
AU - Bargerbos, Arno
AU - Grünhaupt, Lukas
AU - Pita-Vidal, Marta
AU - Wesdorp, Jaap Joachim
AU - Liu, Yu
AU - Kou, Angela
AU - Andersen, Christian Kraglund
AU - Van Heck, Bernard
N1 - Funding Information:
We thank Peter Krogstrup for the supervision of the material growth and Leo P. Kouwenhoven for support and discussion. We also thank Andrey Antipov and Andrew Higginbotham for their careful feedback on the paper. This research was co-funded by the allowance for Top consortia for Knowledge and Innovation (TKI) from the Dutch Ministry of Economic Affairs and the Microsoft Quantum initiative. C.K.A. and B.v.H. acknowledge financial support from the Dutch Research Council (NWO). L.J.S., B.v.H., and A.K. conceived the experiment. L.J.S. fabricated the devices with help from M.P.V. Nanowires were grown by Y.L. L.J.S. acquired and analyzed the data with input from A.B., L.G., A.K., C.K.A., and B.v.H. L.J.S., C.K.A., and B.v.H. wrote the paper with input from all other co-authors. A.K., C.K.A., and B.v.H. supervised the project.
Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/8
Y1 - 2022/8
N2 - We report the detection of a gate-tunable kinetic inductance in a hybrid InAs/Al nanowire. For this purpose, we embed the nanowire into a quarter-wave coplanar waveguide resonator and measure the resonance frequency of the circuit. We find that the resonance frequency can be changed via the gate voltage that controls the electron density of the proximitized semiconductor and thus the nanowire inductance. Applying Mattis-Bardeen theory, we extract the gate dependence of the normal-state conductivity of the nanowire, as well as its superconducting gap. Our measurements complement existing characterization methods for hybrid nanowires and provide a useful tool for gate-controlled superconducting electronics.
AB - We report the detection of a gate-tunable kinetic inductance in a hybrid InAs/Al nanowire. For this purpose, we embed the nanowire into a quarter-wave coplanar waveguide resonator and measure the resonance frequency of the circuit. We find that the resonance frequency can be changed via the gate voltage that controls the electron density of the proximitized semiconductor and thus the nanowire inductance. Applying Mattis-Bardeen theory, we extract the gate dependence of the normal-state conductivity of the nanowire, as well as its superconducting gap. Our measurements complement existing characterization methods for hybrid nanowires and provide a useful tool for gate-controlled superconducting electronics.
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U2 - 10.1103/PhysRevApplied.18.024074
DO - 10.1103/PhysRevApplied.18.024074
M3 - Article
AN - SCOPUS:85137743609
SN - 2331-7019
VL - 18
JO - Physical Review Applied
JF - Physical Review Applied
IS - 2
M1 - 024074
ER -