Stevenson, Thomas R. and Adams, Joseph S. and Hsieh, Wen-Ting and Moseley, Samuel Harvey and Travers, Douglas E. and U-yen, Kongpop and Wollack, Edward J. and Zmuidzinas, Jonas (2009) Superconducting Films for Absorber-Coupled MKID Detectors for Sub-Millimeter and Far-Infrared Astronomy. IEEE Transactions on Applied Superconductivity, 19 (3, Par). pp. 561-564. ISSN 1051-8223 http://resolver.caltech.edu/CaltechAUTHORS:20090808-142502351
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Abstract
We describe measurements of the properties, at dc, gigahertz, and terahertz frequencies, of thin (10 nm) aluminum films with 10 ohm/{rm square}$ normal state sheet resistance. Such films can be applied to construct microwave kinetic inductance detector arrays for submillimeter and far-infrared astronomical applications in which incident power excites quasiparticles directly in a superconducting resonator that is configured to present a matched-impedance to the high frequency radiation being detected. For films 10 nm thick, we report normal state sheet resistance, resistance-temperature curves for the superconducting transition, quality factor and kinetic inductance fraction for microwave resonators made from patterned films, and terahertz measurements of sheet impedance measured with a Fourier Transform Spectrometer. We compare properties with similar resonators made from niobium 600 nm thick.
| Item Type: | Article | ||||
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| Additional Information: | © 2009 IEEE. Manuscript received August 16, 2008. First published June 16, 2009; current version published July 10, 2009. This work was supported in part by an award under NASA’s ROSES-APRA program. The authors thank Ross Henry for FTS measurements of the aluminum films, and Christine Jhabvala and Mary Li for fabrication of the niobium resonators. | ||||
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| Subject Keywords: | Aluminum, inductance, microwave measurements, niobium, Q factor, superconducting resonators | ||||
| Record Number: | CaltechAUTHORS:20090808-142502351 | ||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20090808-142502351 | ||||
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||
| ID Code: | 14892 | ||||
| Collection: | CaltechAUTHORS | ||||
| Deposited By: | George Porter | ||||
| Deposited On: | 01 Sep 2009 23:07 | ||||
| Last Modified: | 26 Dec 2012 11:10 |
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