  In supersymmetry (SUSY) the flavor mixing between top-squark (stop) and
charm-squark (scharm) induces the flavor-changing neutral-current (FCNC) stop
decay $\tilde t_1 \to c \tilde \chi^0_1$. Searching for this decay serves as a
probe of soft SUSY breaking parameters. Focusing on the stop pair production
followed by the FCNC decay of one stop and the charge-current decay of the
other stop, we investigate the potential of detecting this FCNC stop decay at
the Fermilab Tevatron, the CERN Large Hadron Collider (LHC) and the
next-generation $e^+e^-$ linear collider (LC). We find that this decay may not
be accessible at the Tevatron, but could be observable at the LHC and the LC
with high sensitivity.
