Proton spin-lattice relaxation time in the superconducting intercalation complex Tas2(pyridine)1/2

Abstract

Proton NMR in TaS2(pyridine)1/2 shows that pyridine molecules form a rigid lattice with slow molecular motions up to 300 K. The protons' T1 is associated with interactions between the metallic layers and the molecular layers at least above 80 K. An anomalous T1 plateau below 80 K might tentatively be attributed to the occurrence of charge density waves. Below TC a large increase of T-11 has been observed in a single crystal sample.