Altermagnetic perovskites

Altermagnet is a class of antiferromagnets, which shows a staggered spin ordering with wave vector q = 0, while its net magnetization is canceled out in the limit of zero relativistic spin-orbit coupling. The simplest case is when the up and down spins are ordered on two crystallographically equivalent sublattice sites within the unit cell that are not connected by translation, and consequently, the system breaks the macroscopic time-reversal symmetry. Accordingly, it exhibits non-relativistic spin splitting in the energy band and characteristic cross-correlation phenomena between spin, charge, and lattice (orbital) degrees of freedom. This is in contrast to conventional Néel-type antiferromagnets with q ≠ 0…

• JS
  Japan Society for the Promotion of Science

  Awards: 19K03723, 19H05825
• JS
  Japan Science and Technology Agency

  Award: JPMJCR18T2
• IF
  Institute for Materials Research, Tohoku University

  Award: 202112-RDKGE-0019
• DO
  Division of Materials Research
• CR
  Core Research for Evolutional Science and Technology

  Award: JPMJCR18T2