%0 Journal Article
%A Jugovac, Matteo
%A Cojocariu, Iulia
%A Sánchez-Barriga, Jaime
%A Gargiani, Pierluigi
%A Valvidares, Manuel
%A Feyer, Vitaliy
%A Blügel, Stefan
%A Bihlmayer, Gustav
%A Perna, Paolo
%T Inducing Single Spin‐Polarized Flat Bands in Monolayer Graphene
%J Advanced materials
%V 35
%N 38
%@ 0935-9648
%C Weinheim
%I Wiley-VCH
%M FZJ-2023-03686
%P 2301441
%D 2023
%X Due to the fundamental and technological implications in driving the appearance of non-trivial, exotic topological spin textures and emerging symmetry-broken phases, flat electronic bands in 2D materials, including graphene, are nowadays a relevant topic in the field of spintronics. Here, via europium doping, single spin-polarized bands are generated in monolayer graphene supported by the Co(0001) surface. The doping is controlled by Eu positioning, allowing for the formation of a-valley localized single spin-polarized low-dispersive parabolic band close to the Fermi energy when Eu is on top, and of a π* flat band with single spin character when Eu is intercalated underneath graphene. In the latter case, Eu also induces a bandgap opening at the Dirac point while the Eu 4f states act as a spin filter, splitting the π band into two spin-polarized branches. The generation of flat bands with single spin character, as revealed by the spin- and angle-resolved photoemission spectroscopy (ARPES) experiments, complemented by density functional theory (DFT) calculations, opens up new pathways toward the realization of spintronic devices exploiting such novel exotic electronic and magnetic states.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 37036386
%U <Go to ISI:>//WOS:001032982900001
%R 10.1002/adma.202301441
%U https://juser.fz-juelich.de/record/1016517