  To investigate the normal-state magnetic properties of UTe2 under pressure,
we perform 125Te nuclear magnetic resonance (NMR) measurements up to 2 GPa.
Below 1.2 GPa, the b-axis NMR Knight shift shows a broad maximum at the
so-called T_chimax on cooling, which is consistent with the magnetization
measurement under pressure. T_chimax decreases with increasing pressure and
disappears at the critical pressure Pc = 1.7 GPa, above which superconductivity
is destroyed. This tendency is also observed in the temperature dependence of
the nuclear spin-lattice relaxation rate 1/T1. At low pressures, 1/T1 shows a
conventional Fermi-liquid behavior (1/T1T = constant) at low temperatures,
indicating the formation of the heavy-fermion state. Above Pc, 1/T1T follows a
1/T behavior without any crossover to the heavy-fermion state down to the
lowest temperature (~3 K). In addition, the NMR signals disappear below 3~K,
due to the influence of the magnetically ordered moments. From the pressure
dependence of the T_chimax and Knight shift, it was found that the Fermi
surface character is abruptly changed at Pc, and that superconductivity is
observed only in the heavy-fermion state.
