A study is reported of the contribution to the piezoresistive effect in sam
arium-monosulfide-based materials by pressure-induced variation of carrier
mobility. As follows from calculations and experimental data, the piezoresi
stance coefficient for hydrostatic pressure cannot exceed 7x10(-3) MPa-1 at
T=300 K. (C) 1999 American Institute of Physics. [S1063-7834(99)01011-4].