Discovery of novel octupole topological insulator in brillouin three-dimensional real projective space
Peer-Reviewed Publication
Updates every hour. Last Updated: 1-May-2025 05:08 ET (1-May-2025 09:08 GMT/UTC)
In a paper published in National Science Review, researchers report on the discovery of a novel octupole topological insulating phase, protected by a 3D momentum-space nonsymmorphic group, within the framework of the Brillouin 3D real projective space. The 3D higher-order topological insulator exhibits the coexistence of symmetry-protected and surface-obstructed topological phases. The existence of the octupole insulating phase is confirmed through the corner-state impedance peak in the topological circuit.
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