Nica Jane Ferrer1,Gursagar Singh1,Cy Elliott1,Benjamin Wieder2,1,3,Gregory Fiete1,2
Northeastern University1,Massachusetts Institute of Technology2,Princeton University3
Nica Jane Ferrer1,Gursagar Singh1,Cy Elliott1,Benjamin Wieder2,1,3,Gregory Fiete1,2
Northeastern University1,Massachusetts Institute of Technology2,Princeton University3
Recent studies have revealed the superior magnetic properties of L1<sub>0</sub> magnetic materials which lead to a vast number of applications ranging from magnetic recording to medical imaging. While there is a wealth of experimental studies and numerical simulations aimed at finding ways to tune the magnetic properties of these L1<sub>0</sub> magnetic materials, there is inadequate attention given to understanding the underlying mechanisms that govern the magnetic properties of these materials, such as their magnetic anisotropy. Hence, this study aims to elucidate how fundamental interactions such as the electron-electron interaction combined with crystal symmetry affect the magnetic anisotropy of L1<sub>0</sub> magnetic materials. To achieve this, the material is modeled by a tight-binding Hamiltonian with electron-electron interactions accounted for using a Hartree-Fock mean-field approximation. This approach allows us to calculate the magnetic anisotropy as a function of the interaction strength and work through crystal symmetry-related trends in the anisotropy. These trends can be directly compared against material-specific <i>ab initio</i> calculations.