Reorientation of the diagonal double-stripe spin structure at Fe_1+yTe bulk and thin-film surfaces.

ABSTRACT: Establishing the relation between ubiquitous antiferromagnetism in the parent compounds of unconventional superconductors and their superconducting phase is important for understanding the complex physics in these materials. Going from bulk systems to thin films additionally affects their phase diagram. For Fe_1+yTe, the parent compound of Fe_1+ySe_1-xTe_x superconductors, bulk-sensitive neutron diffraction revealed an in-plane oriented diagonal double-stripe antiferromagnetic spin structure. Here we show by spin-resolved scanning tunnelling microscopy that the spin direction at the surfaces of bulk Fe_1+yTe and thin films grown on the topological insulator Bi₂Te₃ is canted out of the high-symmetry directions of the su

SUBMITTER: Hanke T 

PROVIDER: S-EPMC5227097 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature