  Electronic nematicity is ubiquitous in Fe-based superconductors, but what the
primary nematic order is and how the various nematic phenomena correlate with
each other are still elusive. In this manuscript we study the physical
consequence of the orbital nematic order on the spin correlations. We find that
the orbital nematic order can drive a significant spin nematicity and can
enhance the integrated intensity of the spin fluctuations. Our study shows that
the orbital nematic order has strong effect on the spin correlations and it can
not be taken as an unimportant secondary effect of the nematic state in
Fe-based superconductors.
