Topological Insulators, Semimetals, and Superconducting Diode Effects
This community investigates the electronic structure and transport properties of topological materials, focusing on surface states, anomalous Hall effects, and superconducting diode phenomena in thin films and heterostructures.
The work centers on the synthesis and characterization of topological insulators and semimetals, with recurring emphasis on bismuth-based compounds such as Bi2Te3 and related arsenides. Researchers study surface and edge states, spin Hall effects, and quantum anomalous Hall phenomena, often using molecular beam epitaxy to grow high-quality thin films. A significant strand of research explores the superconducting diode effect, where current flows more easily in one direction than the other, observed in Josephson junctions, twisted graphene, and magnetic topological materials. The community also investigates the interplay between magnetism and topology, including magnetic topological insulators and altermagnet-based heterostructures, to understand how spin and charge transport are governed by the material's band structure.
The largest share of the community's output is found in bismuth research, accounting for 3.6% of all bismuth research and comprising 3,253 papers within this group. Tellurium and arsenic also contribute significantly, with 1,424 and 912 papers respectively.
The community comprises 15,146 papers, publishing primarily in Physical Review B, Physical Review Letters, and Applied Physics Letters.
Recent work continues to focus on quantum anomalous Hall effects in ferromagnetic metals, topological pumping in photonic chips, and the diode effect in altermagnet-based superconductor heterostructures.