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arXiv · 2207.12516

Local and Non-local Microwave Impedance of a Three-Terminal Hybrid Device

B. Harlech-Jones·S. J. Waddy·J. D. S. Witt·D. Govender·L. Casparis·E. Martinez·R. Kallaher·S. Gronin·G. Gardner·M. J. Manfra·D. J. Reilly
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Abstract

We report microwave impedance measurements of a superconductor-semiconductor hybrid nanowire device with three terminals (3T). Our technique makes use of transmission line resonators to acquire the nine complex scattering matrix parameters (S-parameters) of the device on fast timescales and across a spectrum of frequencies spanning 0.3 - 7 GHz. Via comparison with dc-transport measurements, we examine the utility of this technique for probing the local and non-local response of 3T devices where capacitive and inductive contributions can play a role. Such measurements require careful interpretation but may be of use in discerning true Majorana zero modes from trivial states arising from disorder.

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B. Harlech-Jones, S. J. Waddy, J. D. S. Witt, D. Govender, L. Casparis, E. Martinez, R. Kallaher, S. Gronin, G. Gardner, M. J. Manfra, D. J. Reilly. 2022-07-25. Local and Non-local Microwave Impedance of a Three-Terminal Hybrid Device. https://arxiv.org/abs/2207.12516

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