WebSep 30, 2024 · To date, all Chern insulator (ChI) phases have been reported to result from successively filling these C = ±1 bands. For example, hexagonal boron nitride (hBN) alignment breaks C2 symmetry and... WebIn 3D momentum space, a topological phase boundary separating the Chern insulating layers from normal insulating layers may exist, where the gap must be closed, resulting in a "Chern semimetal" state with topologically unavoidable band crossings at the Fermi level. This state is a condensed-matter realization of Weyl fermions in ( 3 + 1 ) D ...
Chern insulator phases and spontaneous spin and valley order in …
WebApr 7, 2024 · The charge-neutrality correlated insulating phases discovered here provide the sought-after reference states needed for a comprehensive understanding of the insulating states at integer fillings ... WebWe report Chern insulating phases emerging from a single layer of layered chalcogenide CrSiTe3, a transition metal trichacogenides (TMTC) material, in the presence of charge doping. Due to strong hybridization with Te p orbitals, the spin-orbit coupling effect opens a finite band gap, leading to a nontrivial topology of the Cr eg conduction band manifold … tart sugar
Strongly correlated Chern insulators in magic-angle twisted bilayer ...
WebApr 13, 2024 · Ideal Chern insulating phases arise in two-dimensional systems with broken time-reversal symmetry. They are characterized by having nearly flat bands, and a uniform quantum geometry---which combines the Berry curvature and quantum metric---and by being incompressible. In this work, we analyze the role of the quantum geometry in … Webnential decay in both insulating phases, while having a power-law decay, more characteristic of a metallic system, precisely at the phase boundary. ... Furthermore, an intriguing feature of Chern-insulating systems is that a phase boundary separating the Chern insu-lator from a normal insulator may occur. Such a normal- WebSetting the Fermi energy within the first bulk gap, E F = −1.5J, each region corresponds to a Chern insulating phase with Chern number ν tot = −1 and ν tot = +1, respectively. The result ... 高校剣道 インターハイ