Search results for "transition-edge sensors"

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Fluctuation-Limited Noise in a Superconducting Transition-Edge Sensor

2003

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. Peer reviewed

PhysicsSuperconductivitynoiseCorbino disksCondensed matter physicsPhysicsGeneral Physics and AstronomyBoundary (topology)Spectral densityNoise (electronics)Current noiseNuclear magnetic resonancesuperconducting transition-edge sensorCondensed Matter::Superconductivitysuperconducting transition-edge sensorTransition edge sensorsuperconducting transition-edge sensors
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Large 256-Pixel X-ray Transition-Edge Sensor Arrays With Mo/TiW/Cu Trilayers

2015

We describe the fabrication and electrical characterization of 256-pixel X-ray transition-edge sensor (TES) arrays intended for materials analysis applications. The processing is done on 6-in wafers, providing capabilities on a commercial scale. TES films were novel proximity coupled Mo/TiW/Cu trilayers, where the thin TiW layer in between aims to improve the stability of the devices by preventing unwanted effects such as Mo/Cu interdiffusion. The absorber elements were electrodeposited gold of thickness 2 μm. The single-pixel design discussed here is the so-called Corbino geometry. Most design goals were successfully met, such as the critical temperature, thermal time constant, and transit…

X-ray spectroscopyMaterials scienceFabricationta213superconducting devicesta114business.industryta221Time constantcritical temperatureslarge format arraysCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsCharacterization (materials science)transition-edge sensorsNanosensorX-ray spectroscopyOptoelectronicsWaferElectrical and Electronic EngineeringTransition edge sensorbusinessLayer (electronics)materials analysisnanosensorsIEEE Transactions on Applied Superconductivity
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