Excitonic magnetism involving superpositions of singlet and triplet states is expected to arise for two holes in strongly correlated and spin-orbit-coupled t_{2g} orbitals.However, uncontested material examples for its realization are rare.We apply the variational cluster approach to the square lattice to investigate excitonic antiferromagnetism and the impact milwaukee 2981-20 of a crystal field.We give a phase diagram depending on spin-orbit coupling and crystal field and iphone 12 price georgia find excitonic magnetism to survive in the presence of substantial crystal-field-induced orbital order.
We address the specific example of Ca_{2}RuO_{4} using ab initio modeling and conclude it to realize such excitonic magnetism despite its pronounced orbital polarization.We also reproduce magnetic excitations and show the maximum at momentum (0,0) to be related to the excitonic character of the magnetic order.