Studies of transverse and longitudinal relaxations of ${}^{55}$Mn in molecular cluster magnet Mn${}_{12}$Ac

T. Goto, T. Koshiba, T. Kubo +1

The transverse and longitudinal relaxation rates 1/$T_2$ and 1/$T_1$ of ${}^{55}$Mn in molecular cluster magnet Mn${}_{12}$Ac have been measured al low temperatures down to 200mK and i…