  Neel skyrmions are of high interest due to their potential applications in a
variety of spintronic devices, currently accessible in ultrathin heavy
metal/ferromagnetic bilayers and multilayers with a strong
Dzyaloshinskii-Moriya interaction. Here we report on the direct imaging of
chiral spin structures including skyrmions in an exchange coupled Co/Pd
multilayer at room temperature with Lorentz transmission electron microscopy, a
high resolution technique previously suggested to exhibit no Neel skyrmion
contrast. Phase retrieval methods allow us to map the internal spin structure
of the skyrmion core, identifying a 25 nm central region of uniform
magnetization followed by a larger region characterized by rotation from in- to
out-of-plane. The formation and resolution of the internal spin structure of
room temperature skyrmions without a stabilizing out-of-plane field in thick
magnetic multilayers opens up a new set of tools and materials to study the
physics and device applications associated with chiral ordering and skyrmions.
