  In the context of supersymmetry, the two-loop Barr-Zee diagrams which induce
CP-violating electric dipole moment of electron due to superpartners
simultaneously yield CP-conserving magnetic dipole moment of muon. In this
paper, we derive the coherence between the electric and magnetic dipole moments
at two-loop level due to stops, charginos or neutralinos-charginos. We also use
the coherence to constrain superpartner masses and their CP-violating phases,
in the light of recent ACME limit on the electric dipole moment of electron and
future experiments about magnetic dipole moment of muon such as Fermilab E989
experiment.
