Surface ferromagnetism in the chiral topological semimetal CoSi
Surface ferromagnetism in the chiral topological semimetal CoSi
Despite the chiral topological semimetal CoSi being known as bulk diamagnetic, it shows unusual surface ferromagnetism of debatable origin. The ferromagnetic ordering has been attributed to the distorted bonds, the superlattice of ordered vacancies, or even to topological surface textures due to the spin polarization in the neighboring Fermi arcs. …