The newly discovered high-T c superconductor A15 Nb3Si, with a lattice parameter of 5.091 å, is shown to have an anomalously low H c2 of 12.5 ± 0.5 T, a Ginzburg-Landau κ of 16 ± 2, and an implied resistivity of 35 ± 5ΜΩ-cm. The question of whether poor ordering due to the explosive compression preparation is responsible for this low H c2 is discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bart Olinger and L. R. Newkirk, to be published.
G. R. Stewart, Bart Olinger, and L. R. Newkirk, to be published.
G. R. Stewart, L. R. Newkirk, and B. Cort, unpublished.
G. R. Stewart and A. L. Giorgi, Phys. Rev. B 17, 3534 (1978).
G. R. Stewart, Cryogenics 18, 120 (1978).
N. R. Werthamer, E. Helfand, and P. C. Hohenberg, Phys. Rev. 147, 295 (1966).
B. Cort, G. R. Stewart, C. L. Snead Jr., A. R. Sweedler, and S. Moehlecke, to be published.
D. U. Gubser, R. A. Hein, R. M. Waterstrat, and A. Junod, Phys. Rev. B 14, 3856 (1976).
H. Weismann, M. Gurvitch, A. K. Ghosh, H. Lutz, O. F. Kammerer, and Myron Strongin, Phys. Rev. B 17, 122 (1978).
A. K. Ghosh and Myron Strongin, in Superconductivity in d- and f-band Metals, Harry Suhl and M. Brian Maple, eds. (Academic Press, New York, 1980).
Author information
Authors and Affiliations
Additional information
Work performed under the auspices of the U.S. Department of Energy.
Rights and permissions
About this article
Cite this article
Stewart, G.R., Olinger, B. & Newkirk, L.R. Specific heat of A15 Nb3Si in fields to 7.1 T. J Low Temp Phys 43, 455–459 (1981). https://doi.org/10.1007/BF00115608
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00115608