We examine spin density wave and triplet superconductivity as possible ground states of the Bernal bilayer graphene. The spin density wave is stable for the unbiased and undoped bilayer. Both the doping and the applied bias voltage destroy this phase. We show that, when biased and slightly doped, bilayer can host a triplet superconducting phase. The mechanisms for both ordered phases rely on the renormalized Coulomb interaction. Consistency of our theoretical conclusions with recent experimental results are discussed.
@article{arxiv.2306.12312,
title = {Triplet superconductivity and spin density wave in biased AB bilayer graphene},
author = {A. O. Sboychakov and A. V. Rozhkov and A. L. Rakhmanov},
journal= {arXiv preprint arXiv:2306.12312},
year = {2023}
}
Comments
14 pages, 8 figures, several misprints were corrected, Appendix A was re-written to correct several mistakes (conclusions remain the same), new discussion topics were added; this version is an accurate copy of the published paper