Altermagnetism creates unique surfaces for quantum computing

Researchers at Great Bay University and the University of Würzburg detail a path toward topological superconductivity by combining altermagnetism with a unique material structure. Their work describes how altermagnetic order in a topological insulator, potentially realized in the compound EuIn₂As₂, when paired with superconductivity, creates highly anisotropic superconducting properties and crystal-facet-dependent Bogoliubov Fermi surfaces. These surfaces offer distinct platforms to realize Majorana zero modes, crucial components not only at boundaries or vortex lines within the superconducting material. This approach utilizes altermagnetism-induced Bogoliubov Fermi surfaces to engineer topological superconductivity through crystal anisotropy and quantum confinement. EuIn₂As₂ emerges as a promising candidate material for realizing…