  We report measurements of spin susceptibility of a two-dimensional hole gas
confined at an GaAs/AlGaAs interface in density range from 2.8 x 10^10 to 6.5 x
10^10 cm-2. We used the method of spin polarization of carriers in parallel
magnetic field. We observed an enhancement of the spin susceptibility over the
bulk value that increases as the density is decreased in qualitative agreement
with Quantum Monte Carlo calculations. The measured enhancement factor
increases from 2.8 to 4.8 as the hole density is decreased.
