Under atmospheric pressure, GeRh2Si2 orders antiferromagnetically at T
-N = 35 K, with magnetic entropy S = R In 2 associated with the ordere
d groundstate. Application of modest pressure (approximate to 9 kbar)
to GeRh2Si2 suppresses T-N to near zero Kelvin, increases its Sommerfe
ld coefficient of specific heat by nearly a factor of 3.5 and induces
some form of superconductivity below 400 mK which is depressed by a ma
gnetic field at a rate of -80 mK/kG.