Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Competing magnetic orders and multipolar Weyl fermions in 227 pyrochlore iridates


Roy,  Bitan
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Preprint), 2MB

Supplementary Material (public)
There is no public supplementary material available

Ladovrechis, K., Meng, T., & Roy, B. (2021). Competing magnetic orders and multipolar Weyl fermions in 227 pyrochlore iridates. Physical Review B, 103(24): L241116. doi:10.1103/PhysRevB.103.L241116.

Cite as: https://hdl.handle.net/21.11116/0000-0009-19BB-9
Owing to comparably strong spin-orbit coupling and Hubbard interaction, iridium based 227 pyrochlore oxides harbor a rich confluence of competing magnetic orders and emergent multipolar Weyl quasiparticles. Here we show that this family of materials is predominantly susceptible toward the nucleation of electronic noncoplanar all-in all-out (AIAO) and three-in one-out (3I1O) orders, respectively transforming under the singlet A(2u) and triplet T-1u representations, supporting octupolar and dipolar Weyl fermions, and favored by strong on-site Hubbard and nearest-neighbor ferromagnetic interaction. Furthermore, a coplanar magnetic order generically appears as an intermediate phase between them. This order transforms under the triplet T-2u representation and also hosts octupolar Weyl fermions. With the AIAO and 3I1O phases possibly being realized in (Nd1-xPrx)(2)Ir2O7 when x = 0 and 1, respectively, the intervening T-2u order can in principle be found at an intermediate doping (0 < x < 1) or in pressured (hydrostatic) Nd2Ir2O7.