Characterization of the superconducting microwave properties of aluminum manganese

Lisovenko, M., Pan, Z., Barry, Peter, Cecil, T., Chang, C. L., Hood, J., Li, J., Novosad, V., Wang, G. and Yefremenko, V. 2022. Characterization of the superconducting microwave properties of aluminum manganese. Journal of Low Temperature Physics 209 (5-6) , pp. 1158-1164. 10.1007/s10909-022-02845-2

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Abstract

A microwave kinetic inductance detector (MKID) is a superconducting pair breaking detector that offers a number of unique advantages for realizing large-format arrays of ultra-sensitive detectors, such as inherent multiplexibility and relative ease of fabrication. With the detection threshold being set by the Cooper pair binding energy, and correspondingly, the superconducting critical temperature (Tc), typically well-understood MKID materials such as aluminum (Al) present a lower limit on the operating frequency. Aluminum manganese (Al-Mn) is a promising candidate material for MKIDs because it can be fabricated with nearly identical processing as pure Al, but allows for control of the Tc with varying levels of Mn doping or post-deposition heat treatment. We present initial results from an early characterization of AlMn using a series of lumped-element superconducting microwave resonators, including measurements of Tc, internal quality factor, and noise performance over a range of Mn doping.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Springer
ISSN:	0022-2291
Date of Acceptance:	12 August 2022
Last Modified:	12 Jan 2023 14:30
URI:	https://orca.cardiff.ac.uk/id/eprint/155679

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