Effect of damage by 2 MeV He ions on the normal and superconducting properties of magnesium diboride

R. Gandikota, Rakesh Singh, J. Kim, B. Wilkens, Nathan Newman, J. M. Rowell, A. V. Pogrebnyakov, X. X. Xi, J. M. Redwing, S. Y. Xu, Q. Li

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

We have studied the effect of damage induced by 2 MeV alpha particles on the critical temperature, Tc, and resistivity, ρ, of Mg B2 thin films. This technique allows defects to be controllably introduced into Mg B2 in small successive steps. Tc decreases linearly as the intragrain resistivity at 40 K increases, while the intergrain connectivity is not changed. Tc is ultimately reduced to less than 7 K and we see no evidence for a saturation of Tc at about 20 K, contrary to the predictions of the Tc of Mg B2 in the dirty limit of interband scattering.

Original languageEnglish (US)
Article number012508
Pages (from-to)012508-1-012508-3
JournalApplied Physics Letters
Volume86
Issue number1
DOIs
StatePublished - Jan 1 2005

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Effect of damage by 2 MeV He ions on the normal and superconducting properties of magnesium diboride'. Together they form a unique fingerprint.

  • Cite this

    Gandikota, R., Singh, R., Kim, J., Wilkens, B., Newman, N., Rowell, J. M., Pogrebnyakov, A. V., Xi, X. X., Redwing, J. M., Xu, S. Y., & Li, Q. (2005). Effect of damage by 2 MeV He ions on the normal and superconducting properties of magnesium diboride. Applied Physics Letters, 86(1), 012508-1-012508-3. [012508]. https://doi.org/10.1063/1.1845591