Electronic commensuration of a spin moire superlattice in a layered magnetic semimetal.

ABSTRACT: Spin moiré superlattices (SMSs) have been proposed as a magnetic analog of crystallographic moiré systems and a source of electron minibands offering vector-field moiré tunability and Berry curvature effects. However, it has proven challenging to realize an SMS in which a large exchange coupling J is transmitted between conduction electrons and localized spins. Furthermore, most systems have carrier mean free paths l_mfp shorter than their spin moiré lattice constant a_spin, inhibiting miniband formation. Here, we discover that the layered magnetic semimetal EuAg₄Sb₂ overcomes these challenges by forming an interface with J ~ 100 milli-electron volts transferred between a Eu triangular lattice and anionic Ag₂S

SUBMITTER: Kurumaji T 

PROVIDER: S-EPMC11797546 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature