Publication details
Antiferromagnetic magnons and local anisotropy: Dynamical mean-field study
| Authors | |
|---|---|
| Year of publication | 2021 |
| Type | Article in Periodical |
| Magazine / Source | Physical Review B |
| MU Faculty or unit | |
| Citation | |
| Web | https://doi.org/10.1103/PhysRevB.104.075152 |
| Doi | http://dx.doi.org/10.1103/PhysRevB.104.075152 |
| Keywords | Hubbard model; Spin dynamics; Antiferromagnets; Green's function methods; Magnetic order |
| Description | We present a dynamical mean-field study of antiferromagnetic magnons in a one-, two-, and three-orbital Hubbard model of square and bcc cubic lattice at intermediate coupling strength. We investigate 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 analyze a model with spin-orbit coupling in cubic site-symmetry setting. The ordered states as well as the magnetic excitations are sensitive to even a small breaking of SU(2) symmetry of the model and follow the expectations of spin-wave theory as well as general symmetry considerations. |
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