Altermagnetic order in 3D topological insulator thin films produces helical edge states with zero total Chern number, protected by crystalline and magnetic symmetry, with measurable quantized nonlocal resistance plateaus.
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Interplay of Altermagnetic Order and Wilson Mass in the Dirac Equation: Helical Edge States without Time-Reversal Symmetry
Altermagnetic order in 3D topological insulator thin films produces helical edge states with zero total Chern number, protected by crystalline and magnetic symmetry, with measurable quantized nonlocal resistance plateaus.