  Utilizing the Pauli equation based multislice method, introduced in Phys.
Rev. Lett. 116, 127203 (2016), we study the atomic resolution differential
phase contrast (DPC) imaging on an example of a hard magnet FePt with in-plane
magnetization. Simulated center of mass pattern in a scanning transmission
electron microscopy (STEM) experiment carries information about both electric
and magnetic fields. The momentum transfer remains curl-free, which has
consequences for interpretation of the integrated DPC technique. The extracted
magnetic component of the pattern is compared to the expected projected
microscopic magnetic field as obtained by density functional theory
calculation. Qualitative agreement is obtained for low sample thicknesses and a
suitable range of collection angles.
