2003/02/28 by Arttu Luukanen, A. Luukanen, K. M. Kinnunen +8
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconducting and THz Device Technology #Superconductivity in MgB2 and Alloys #astro-ph #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.90.238306
published as Phys.Rev.Lett. 90 (2003) 238306 · 9 pages, 4 figures.; Corrections to text and equations; replaced the affected figures. Added reference [12]
arxiv created 2003/04/29 · openalex publication_date 2003/06/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In order to investigate the origin of the until now unaccounted excess noise and to minimize the uncontrollable phenomena at the transition in x-ray microcalorimeters we have developed superconducting transition-edge sensors into an edgeless geometry, the so-called Corbino disk, with superconducting contacts in the center and at the outer perimeter. The measured rms current noise and its spectral density can be modeled as resistance noise resulting from fluctuations near the equilibrium superconductor-normal metal boundary.