Size and dimensionality effects in superconducting Mo thin films

Fábrega, Lourdes and Camón, Agustin and Fernández Martínez, Ivan and Sesé, Javier and Parra Borderías, Maria and Gil, Oscar and Gonzalez Arrabal, Raquel and Costa Krämer, Jose L. and Briones Fernández-Pola, Fernando (2011). Size and dimensionality effects in superconducting Mo thin films. "Superconductor Science Technololgy", v. 24 (n. 7); pp. 1-7. ISSN 1361-6668. https://doi.org/10.1088/0953-2048/24/7/075014.

Description

Title: Size and dimensionality effects in superconducting Mo thin films
Author/s:
  • Fábrega, Lourdes
  • Camón, Agustin
  • Fernández Martínez, Ivan
  • Sesé, Javier
  • Parra Borderías, Maria
  • Gil, Oscar
  • Gonzalez Arrabal, Raquel
  • Costa Krämer, Jose L.
  • Briones Fernández-Pola, Fernando
Item Type: Article
Título de Revista/Publicación: Superconductor Science Technololgy
Date: 2011
ISSN: 1361-6668
Volume: 24
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Molybdenum is a low Tc, type I superconductor whose fundamental properties are poorly known. Its importance as an essential constituent of new high performance radiation detectors, the so-called transition edge sensors (TESs) calls for better characterization of this superconductor, especially in thin film form. Here we report on a study of the basic superconducting features of Mo thin films as a function of their thickness. The resistivity is found to rise and the critical temperature decreases on decreasing film thickness, as expected. More relevant, the critical fields along and perpendicular to the film plane are markedly different, thickness dependent and much larger than the thermodynamic critical field of Mo bulk. These results are consistent with a picture of type II 2D superconducting films, and allow estimates of the fundamental superconducting lengths of Mo. The role of morphology in determining the 2D and type II character of the otherwise type I molybdenum is discussed. The possible consequences of this behaviour on the performance of radiation detectors are also addressed

More information

Item ID: 11450
DC Identifier: http://oa.upm.es/11450/
OAI Identifier: oai:oa.upm.es:11450
DOI: 10.1088/0953-2048/24/7/075014
Official URL: http://iopscience.iop.org/0953-2048/24/7/075014
Deposited by: Memoria Investigacion
Deposited on: 23 Jul 2012 12:57
Last Modified: 20 Apr 2016 19:31
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