He plated MCM-41: NMR Studies*

We report the results of NMR studies of the dynamics of ³He confined to 1D in the interior of the hexagonal nanochannels of MCM-41. The walls of the MCM-41 were coated with a monolayer of ⁴He and ³He was added afterwards to form a 1D ³He line density of 0.1 Å^-1. The nuclear spin-lattice relaxation times were measured for temperatures 0.050 < T < 3.0 K. A distinct peak is observed at 95 mK which is interpreted as the expected maximum of the “spin-drag” relaxation time predicted by theory for T = 2T_F where T_F is the Fermi degeneracy temperature.