WebTherefore the FDIR will carry Chern numbers 1 mod n foronevalence band and 3 modn forthe otherwith total Chern number 4 mod nor 2 for the FDIR. This is zero only for n ¼ 1, 2, 4. If the conduction and valence bands are distinct in a small region around k, the Chern number of the FDIR will be nonzero if the little group Gk Web29 de set. de 2024 · The team also discovered a new type of wave that flows along the two-dimensional (2D) surfaces of any 3D Chern insulator. Similar “topological surface states” have been observed in other topological materials, but the topological surface states of 3D Chern insulators have remarkable features not found anywhere else.
Science highlighted Jian Wang’s research in Editors
Web20 de mai. de 2014 · Graphynes represent an emerging family of carbon allotropes that recently attracted much interest due to the tunability of the Dirac cones in the band structure. Here, we show that the spin-orbit couplings in $β$-graphyne could produce various effects related to the topological properties of its electronic bands. Intrinsic spin-orbit coupling … Web1 de jun. de 2024 · Since penta-graphene (PG), a two-dimensional (2D) carbon allotrope exclusively composed of five-membered rings, was proposed in 2015, a great deal of … soil thermal resistivity table
Field-controlled quantum anomalous Hall effect in electron-doped ...
WebA magnetic topological insulator in two-dimensional EuCd 2 Bi 2: ... accompanied by a nonzero spin Chern number and a pair of gapless edge states, ... indicating that EuCd 2 Bi 2 represents a promising material for understanding and utilizing the topological insulating states in two-dimensional spin–orbit magnets. Web1 de mai. de 2024 · Temperature evolution and quantum critical behaviour of the axion insulator to Chern insulator transition a, Magnetic-field dependence of ρxx and ρyx at varied temperatures with Vg = 25 V. Web20 de jan. de 2024 · The quantum Hall effect (QHE) associated with Chern insulators reveals the non-trivial topological properties of two-dimensional electronic systems subject to strong magnetic field, which features finite Chern number C and chiral edge states. The latter promise robust electron transport and have received tremendous attention in both … soil thermometer lowes