Oliviero, VBenhabib, S.Gilmutdinov, IVignolle, B.Drigo, L.Massoudzadegan, M.Leroux, M.Rikken, G. L. J. A.Forget, A.Colson, D.Vignolles, D.Proust, C.2022-04-112022-04-112022-04-112022-03-2310.1038/s41467-022-29134-6https://infoscience.epfl.ch/handle/20.500.14299/187070WOS:000772575300002Multilayered cuprates possess not only the highest superconducting temperature transition but also offer a unique platform to study disorder-free CuO2 planes and the interplay between competing orders with superconductivity. Here, we study the underdoped trilayer cuprate HgBa2Ca2Cu3O8+delta and we report quantum oscillation and Hall effect measurements in magnetic field up to 88 T. A careful analysis of the complex spectra of quantum oscillations strongly supports the coexistence of an antiferromagnetic order in the inner plane and a charge order in the outer planes. The presence of an ordered antiferromagnetic metallic state that extends deep in the superconducting phase is a key ingredient that supports magnetically mediated pairing interaction in cuprates.Multidisciplinary SciencesScience & Technology - Other Topicst-cquantum oscillationsfermi-surfacedensity-wavetemperaturesuperconductivityexcitationspseudogappocketsMagnetotransport signatures of antiferromagnetism coexisting with charge order in the trilayer cuprate HgBa2Ca2Cu3O8+deltatext::journal::journal article::research article