  We report anisotropic magnetoresistance in Pt|Y3Fe5O12 bilayers. In spite of
Y3Fe5O12 being a very good electrical insulator, the resistance of the Pt layer
reflects its magnetization direction. The effect persists even when a Cu layer
is inserted between Pt and Y3Fe5O12, excluding the contribution of induced
equilibrium magnetization at the interface. Instead, we show that the effect
originates from concerted actions of the direct and inverse spin Hall effects
and therefore call it "spin Hall magnetoresistance."
