Fluctuation superconductivity limited noise in a transition-edge sensor

Details Fluctuation superconductivity limited noise in a transition-edge sensor Fluctuation superconductivity limited noise in a transition-edge sensor

2003-02-18

arxiv.org/abs/cond-mat/0302367v2

Phys.Rev.Lett. 90 (2003) 238306

Physics

Condensed Matter

Superconductivity

9 pages, 4 figures.; Corrections to text and equations; replaced the affected figures. Added reference [12]

Scientific paper

10.1103/PhysRevLett.90.238306

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 (CorTES), with superconducting contacts in the centre 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

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