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Altermagnets are magnetic states with fully compensated spins arranged in alternating local structures such that symmetry allows spin split bands and ferromagnetic behaviours, sometimes induced by external current or strain. These altermagnets, positioned between ferromagnets and antiferromagnets, can exhibit beneficial effects such as high tunability and fast dynamics. Additionally, due to their intrinsic construction, altermagnets tend to show strong coupling phenomena among charge currents, spins, and crystal lattices. As a result, they can display kinetomagnetism (current-induced magnetization), piezomagnetism (stress-induced magnetization), and unconventional magnetic, phononic, and photonic dynamics. Thus, unprecedented magnetic phenomena in altermagnets, as well as the optimization of these phenomena in new altermagnetic materials, need to be explored.
This collection aims to bring together researchers working on altermagnets from all different fields, including but not limited to crystallography, condensed matter physics, chemistry, and materials science.