Fermi Surface and DHvA Effect in the Normal State of High T/sub C/ A-15 Superconductors

摘要

The Fermi surface of Nb sub 3 Sn has been derived from an APW band calculation. de Haas-van Alphen (dHvA) oscillations have been observed in Nb sub 3 Sn and V sub 3 Si which give a consistent FS description. Using single crystals of high resistance ratio's and magntic fields up to 400 kOe, dHvA oscillations have been seen in the normal state for both specimens. New features of the Fermi surface include osculated ellipsoidal structure around M and a large cubical structure around Lambda. (ERA citation 04:014001)