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Chern insulating phases

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 https://fridolph.com

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

Phys. Rev. B 99, 235110 (2024) - Chern insulators for …

Category:Orbital Chern Insulator and Quantum Phase Diagram of a …

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Chern insulating phases

Magnetic Chern Insulators in a monolayer of Transition Metal ...

WebMay 1, 2024 · The Chern insulating phase is sensitive to the Coulomb repulsion strength: X = Tc undergoes a transition from a CI to a trivial metallic state beyond a critical … http://yclept.ucdavis.edu/Publ/ChernMott_QMatss.pdf

Chern insulating phases

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WebAug 5, 2024 · Sungmo Kang Seungjin Kang Heung-Sik Kim Jaejun Yu Abstract We report Chern insulating phases emerging from a single layer of layered chalcogenide CrSiTe$_ {3}$, a transition metal trichacogenides... WebChern-insulating phase in non-Dirac heterostructure: Role of polarized light and spin-orbit interaction Faheem Gul, Kulsoom Rahim Article 128619 View PDF Article preview Short communicationFull text access Intertwined charge and spin orders through the exchange-interaction on a square lattice Xuanlan Wang, Wei Zhu Article 128652 View PDF

WebHoneycomb lattice systems such as we discuss here, occupied by heavy transition-metal ions, have been proposed as Chern insulators, but finding a concrete example has …

WebStrongly correlated Chern insulators in magic-angle twisted bilayer graphene Interactions between electrons and the topology of their energy bands can create unusual quantum … WebMar 18, 2024 · The orbital Chern insulator is robust against small coupling J. By further increasing J, we find that the ferromagnetic topological phase is suppressed, which first …

WebJun 6, 2024 · Here, we develop an analogy between the mathematical description of waves propagating in such networks and models of Majorana fermions hopping on a lattice. Using this analogy we propose simple electrical network architectures that realize Chern insulating phases for electromagnetic waves.

Web2 days ago · Notably, at ν = ± 1 we find states with non-zero Chern numbers. For ν = −1 the insulating state exhibits a sharp hysteretic resistance enhancement when a perpendicular magnetic field greater ... tart tahoe transitWebDec 27, 2024 · An analysis of the excitonic insulator mean field theory further reveals that the ground state of the Chern insulating phase with higher Chern number has the structure of a multicomponent integer quantum Hall state. 高校 医学部 ランキング 2022WebMar 18, 2024 · We study the quantum phase diagram of electrons on kagome lattice with half-filled lowest flat bands by considering the antiferromagnetic Heisenberg interaction J, and short-range Coulomb interaction V.In the weak J regime, we identify a fully spin-polarized phase. The presence of finite V drives a spontaneous chiral current, which … 高校卒業 年齢 2001年生まれWebJun 15, 2024 · A transition from Chern insulator at small U to trivial Mott insulator at larger U occurred at a bandgap closing and reopening for the critical value Uc = 2.45 eV. Since calculated values of U for Fe are 4–5 eV, our conclusion was that the ground state is a conventional Mott insulator. tart tamper targetWebAug 22, 2024 · Fractional Chern insulating phases and the spontaneous quantum anomalous Hall effect are studied using exact diagonalization calculations of the many-body ground state of the projected interaction ... 高校 医療コースWebOct 7, 2024 · We determined the phase diagram in the plane of topological mass versus disorder strength, characterizing the system with respect to spectral, localization and topological properties. In the... 高校 卒業祝い 相場 プレゼントWebcally distinct insulating phases, marked by the values of a topological invariant, i.e. the Chern number C h. The topologically non-trivial insulating phase is characterized by C … tart tamper walmart