Calculations of Some Doping Nanostructurations and Patterns Improving the Functionality of High-Temperature Superconductors for Bolometer Device Applications

Autor: Carlos Montero-Orille, Martín M. Botana, Manuel V. Ramallo, Jose C. Verde, Alberto S. Viz
Přispěvatelé: Universidade de Santiago de Compostela. Departamento de Física Aplicada, Universidade de Santiago de Compostela. Departamento de Física de Partículas
Rok vydání: 2019
Předmět:
Materials science
High-temperature superconductivity
superconducting devices
General Chemical Engineering
Photodetector
nanostructured and microstructured superconductors
01 natural sciences
Article
010305 fluids & plasmas
law.invention
lcsh:Chemistry
Condensed Matter::Materials Science
high temperature superconductors
Operating temperature
law
Condensed Matter::Superconductivity
0103 physical sciences
Nanostructured Materials
nanostructured materials
General Materials Science
Superconducting Devices
010306 general physics
Superconductivity
Resistive touchscreen
business.industry
Doping
Bolometer
High Temperature Superconductors
Photodetectors
Bolometers
lcsh:QD1-999
Nanostructured And Microstructured Superconductors
Optoelectronics
photodetectors
Condensed Matter::Strongly Correlated Electrons
business
Order of magnitude
bolometers
Zdroj: Nanomaterials
Volume 10
Issue 1
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname
Nanomaterials, Vol 10, Iss 1, p 97 (2020)
ISSN: 2079-4991
Popis: We calculate the effects of doping nanostructuration and the patterning of thin films of high-temperature superconductors (HTS) with the aim of optimizing their functionality as sensing materials for resistive transition-edge bolometer devices (TES). We focus, in particular, on spatial variations of the carrier doping into the CuO 2 layers due to oxygen off-stoichiometry, (that induce, in turn, critical temperature variations) and explore following two major cases of such structurations: First, the random nanoscale disorder intrinsically associated to doping levels that do not maximize the superconducting critical temperature
our studies suggest that this first simple structuration already improves some of the bolometric operational parameters with respect to the conventional, nonstructured HTS materials used until now. Secondly, we consider the imposition of regular arrangements of zones with different nominal doping levels (patterning)
we find that such regular patterns may improve the bolometer performance even further. We find one design that improves, with respect to nonstructured HTS materials, both the saturation power and the operating temperature width by more than one order of magnitude. It also almost doubles the response of the sensor to radiation.
Databáze: OpenAIRE