ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
The T c behavior of vapor-deposited Nb3Ge and Nb3Sn is examined as a function of low-fluence alpha-particle irradiation. It is found that for Nb3Sn with ϱ ∼ 15 ΜΩ-cm the T c is insensitive to low doses of radiation, whereas Nb3Ge with ϱ0 ∼ 50 ΜΩ-cm has its T c depressed immediately with irradiation. It is suggested that the T c behavior of A-15 superconductors in the regime of small dose is strongly influenced by the initial state of the sample. Furthermore, it is argued that the behavior of the T c with dose can be qualitatively explained by considering a sharp structure in the density of states N(E), the smearing of which by defects leads to a depression in T c .
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00114965
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