ECRYS - 93
J. Phys. IV France 03 (1993) C2-27-C2-32
Evidence for possible interaction between CDW and magnetic vortices in 2H-NbSe2 : comparison with 2H-NbS2Z. XU1, H. DRULIS1, 2, L.E. DELONG1 and J.W. BRILL1
1 Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, U.S.A.
2 Trzebiatowsi Institute of Low Temperature and Structure Research, Polish Academy of Science, 50-950 Wroclaw 2, P.O. Box 937, Poland
We have performed vibrating reed (f~1 kHz) and ac susceptibility (f~800 kHz, i.e. RF penetration depth) measurements on superconducting 2H-NbSe2 and 2H-NbS2 in magnetic fields. For NbSe2, a low temperature dissipation peak is correlated with a dip in vibrating reed resonant frequency and peak in ac susceptibility, signifying softening of the flux line lattice ; these features are not observed in NbS2. We suggest that the softening of the FLL is due to an interaction with the CDW, which does not occur in NbS2.
© EDP Sciences 1993