2021/05/26 by A. Niyazi, D. Geffroy, J. Kuneš +1
Materials Science · Mathematics · Physics and Astronomy · #Anisotropy #Antiferromagnetism #Condensed matter physics #Ferromagnetism #Field (mathematics) #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Magnon #Mathematics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.104.075152
published as Phys. Rev. B 104, 075152 (2021) · 8 pages, 6 figures
openalex publication_date 2021/05/26 · openalex created_date 2021/08/30 · arxiv created 2021/09/09 · arxiv updated 2021/09/10 · openalex updated_date 2026/08/05
We present a dynamical mean-field study of antiferromagnetic magnons in one-, two- and three-orbital Hubbard model of square and bcc cubic lattice at intermediate coupling strength. Weinvestigate the effect of anisotropy introduced by an external magnetic field or single-ion anisotropy.For the latter we tune continuously between the easy-axis and easy-plane models. We also analyzea model with spin-orbit coupling in cubic site-symmetry setting. The ordered states as well as themagnetic excitations are sensitive to even a small breaking ofSU(2)symmetry of the model andfollow the expectations of spin-wave theory as well as general symmetry considerations.