Topological superconductivity is a major focus in condensed matter physics since it can host Majorana fermions, which are key components for future fault-tolerant quantum computers. Within this field, Weyl topological superconductivity is a unique state that features protected Bogoliubov point gap nodes and surface Fermi arcs. However, realizing this state in materials is challenging, as it typically requires on complex band structures and a delicate relativistic effect known as spin-orbit coupling.
A recent study published in the National Science Review offers a simpler and more universal mechanism. A collaborative team led by Fan Yang at the Beijing Institute of Technology and Congjun Wu at Westlake University found that Weyl topological superconductivity can naturally emerge from repulsive electron interactions in a three-dimensional (3D) cubic lattice.
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