Superconducting tungsten films for use as phase transition thermometers for calorimetric detectors

P. Colling, A. Nucciotti, W. Seidel, F. Pröbst, S. Cooper, D. Dummer, P. Ferger, Matthias Frank, J. Igalson, U. Nagel, A. Rulofs, L. Stodolsky

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

To improve the sensitivity of calorimetric particle detectors we want to produce low-Tc superconducting thin films to be used as phase transition thermometers. We have succeeded in depositing epitaxial α-tungsten films on sapphire which have critical temperatures Tc near 15 mK. To our knowledge this is the first time that the Tc of bulk tungsten has been observed in thin films. Such a film has been produced on a 4 g sapphire crystal and operated as a calorimeter, giving an energy resolution of 75 eV (FWHM) for 1.5 keV X-rays.

Original languageEnglish (US)
Pages (from-to)549-554
Number of pages6
JournalJournal of Low Temperature Physics
Volume93
Issue number3-4
DOIs
StatePublished - Nov 1 1993
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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    Colling, P., Nucciotti, A., Seidel, W., Pröbst, F., Cooper, S., Dummer, D., Ferger, P., Frank, M., Igalson, J., Nagel, U., Rulofs, A., & Stodolsky, L. (1993). Superconducting tungsten films for use as phase transition thermometers for calorimetric detectors. Journal of Low Temperature Physics, 93(3-4), 549-554. https://doi.org/10.1007/BF00693474