Superconducting transition edge sensor using dilute AlMn alloys

Published

July 6, 2004

Author(s)

Steven Deiker, William B. Doriese, Gene C. Hilton, Kent D. Irwin, William H. Rippard, Joel N. Ullom, Leila R. Vale, Steve T. Ruggiero, Anthony Williams, B. Young

Abstract

We have fabricated a bolometer using a transition-edge sensor (TES) made of Al doped with Mn to suppress the superconducting critical temperature !Tc" of Al from #1 K to #100 mK. The resulting detector exhibits low-frequency noise consistent with theory, with a noise-equivalent power of 7.5!10−18 W/ $Hz. The addition of Mn impurities did not significantly increase the heat capacity of the TES. In addition, the detector is surprisingly insensitive to applied magnetic fields. The use of AlMn alloy films in arrays of TES detectors has advantages in simplicity of fabrication when compared to traditional bilayer fabrication techniques.

Citation

Applied Physics Letters

Volume

85

Issue

11

Pub Type

Journals

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Keywords

Aluminum, bolometer, Cryogenic sensors, manganese, superconducting transition temperature, Transition Edge Sensor, x-rays

Citation

Deiker, S. , Doriese, W. , Hilton, G. , Irwin, K. , Rippard, W. , Ullom, J. , Vale, L. , Ruggiero, S. , Williams, A. and Young, B. (2004), Superconducting transition edge sensor using dilute AlMn alloys, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31652 (Accessed October 11, 2025)