I have intercalated a 2H-TaS2 crystal with a molecular cation. The M(H) at low T (below Tc) shows the usual hysteresis, characteristic of a superconductor. At 10 K (above Tc) the trend is intriguing, since shows a complex diamagnetic response at low fields and then M(H) becomes positive and linear with H.

Info: intercalated 2H-TaS2 is a heavily doped hybrid organic-inorganic superlattice, composed of monolayers of TaS2 alternated with molecular mololayers.

Can someone explain these feautures of M(H) at 10 K, close to Tc but surely out of SC state?

Thank you in advance for your time!

Daniel T.