We previously show [JETP Letters, {\bf 114}, 763 (2021)] that a graphene sample placed on a ferromagnetic substrate demonstrates a cooperative magnetoelectronic instability. The instability induces a gap in the electronic spectrum and a canting deformation of the magnetization near the graphene-substrate interface. In this paper we prove that the interaction between the electrons in graphene strongly enhances the instability. Our estimates suggest that in the presence of even a moderate interaction the instability can be sufficiently pronounced to be detected experimentally in a realistic setting.
@article{arxiv.2204.13434,
title = {Graphene on a ferromagnetic substrate: instability of the electronic liquid},
author = {D. N. Dresviankin and A. V. Rozhkov and A. O. Sboychakov},
journal= {arXiv preprint arXiv:2204.13434},
year = {2022}
}