WebSymmetry-enforced chiral hinge states and surface quantum anomalous Hall effect in the magnetic axion insulator Bi 2–x Sm x Se 3. C Yue, Y Xu, Z Song, H Weng, YM Lu, C Fang, X Dai ... Filling-enforced obstructed atomic insulators. Y Xu, L Elcoro, ZD Song, MG Vergniory, C Felser, SSP Parkin, N Regnault, ... arXiv preprint arXiv:2106.10276 ... WebJun 17, 2024 · In this paper, we show that, remarkably, for a subset of the topologically trivial insulators, knowing only their electron number and the Wyckoff positions of the …
(PDF) Orbital Shift‐Induced Boundary Obstructed ... - ResearchGate
WebThe obstructed atomic insulator (OAI) is unique in that it is a topologically nontrivial insulating material, but the band representations deduced from irreducible representations are not... WebMar 19, 2024 · Filling-Enforced Obstructed Atomic Insulators. Yuanfeng Xu, L. Elcoro, +6 authors B. Bernevig; Physics. 2024; Topological band theory has achieved great success in the high-throughput search for topological band structures both in paramagnetic and magnetic crystal materials. However, a significant proportion … fftedit
Phononic Obstructed Atomic Insulators with Robust Corner Modes
WebIn (f), the highest valence band and the lowest conduction band are separated by a large band gap, and the (100) surface is insulating. On the other hand, the valence and conduction bands on the (001) surface are degenerate at the high-symmetry points, and the (001) surface in (d) is metallic. - "Filling-Enforced Obstructed Atomic Insulators" WebDownload scientific diagram S (green) and ∂ δ S (red) for H SSH from publication: Topological obstructed atomic limit insulators by annihilating Dirac fermions We show that annihilating a ... WebMar 15, 2024 · Figure 9. Sewing the boundaries in a boundary obstructed atomic insulator (e.g., the DMQI quadrupole insulator). When the boundary is stitched along one direction, the filling anomaly is lifted since the two corners contribute with half a charge so that all sites will now have integer filling. fft decimation