  We explore possibilities of stabilizing a skyrmion (SkX) phase in the
frustrated antiferromagnetic (AF) Heisenberg model with DMI on a triangular
lattice at ambient conditions. We show that by stacking multiple AF layers and
coupling them with strong ferromagnetic (F) interaction the SkX phase stability
temperature window can be extended by several times. The transition temperature
increase is supported by the increasing number of layers and interlayer
interaction and thus room-temperature SkX phase could be achievable by proper
tailoring of the multilayer structure. Further, we demonstrate that in the
sandwich heterostructure, obtained by inserting a stiff F layer in between two
AF layers, the required external magnetic field can be completely replaced by
the effective field imposed by the F layer. Thus, one can design a
heterostructure with the SkX phase stabilized at relatively high temperatures
and zero field - the environment favorable for technological applications.
