Physicists at Stony Brook University have made significant strides in understanding the nonlinear response of planar altermagnets, a novel class of magnetic materials. These materials, with electron spins varying by momentum, offer potential in spintronic and electronic applications. The study, published in Physical Review Letters, focuses on how the unique quantum geometry of altermagnets induces nonlinear transport properties. Researchers identified that, unlike other materials, altermagnets exhibit a third-order nonlinear response due to their inversion symmetry, which is linked to large spin-splitting and weak spin-orbit coupling. This discovery could pave the way for deeper investigations into altermagnets’ quantum properties and potential technological applications.
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