Spin-orbit coupling-induced band inversion and spin Chern insulator phase in plumbene and stanene
Sign Up to like & getrecommendations! Published in 2020 at "Current Applied Physics"
DOI: 10.1016/j.cap.2019.12.009
Abstract: Abstract Z 2 topology in two-dimensional group IVA materials has been explained by the band orders due to the crystal field splitting at the Γ point in the Brillouin zone, while spin-orbit coupling (SOC) was… read more here.
Keywords: plumbene; chern insulator; band; spin ... See more keywords
Tunable Topological States in Stacked Chern Insulator Bilayers.
Sign Up to like & getrecommendations! Published in 2023 at "Nano letters"
DOI: 10.1021/acs.nanolett.3c00154
Abstract: The emergence of intrinsic quantum anomalous Hall (QAH) insulators with a long-range ferromagnetic (FM) order triggers unprecedented prosperity for combining topology and magnetism in low dimensions. Built upon atom-thin Chern insulator monolayer MnBr3, we propose… read more here.
Keywords: tunable topological; insulator; stacked chern; insulator bilayers ... See more keywords
Tunable correlated Chern insulator and ferromagnetism in a moiré superlattice
Sign Up to like & getrecommendations! Published in 2020 at "Nature"
DOI: 10.1038/s41586-020-2049-7
Abstract: Studies of two-dimensional electron systems in a strong magnetic field revealed the quantum Hall effect 1 , a topological state of matter featuring a finite Chern number C and chiral edge states 2 , 3… read more here.
Keywords: superlattice; field; chern insulator; moir ... See more keywords
Interplay of fractional Chern insulator and charge density wave phases in twisted bilayer graphene
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.125406
Abstract: Large-scale exact diagonalization reveals the competition between fractional Chern insulator and charge density wave states in a realistic spin- and valley-polarized single-band model for twisted bilayer graphene aligned with its hexagonal boron nitride substrate. While… read more here.
Keywords: fractional chern; charge density; insulator charge; density wave ... See more keywords
Collective excitations of the Chern-insulator states in commensurate double moiré superlattices of twisted bilayer graphene on hexagonal boron nitride
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review B"
DOI: 10.1103/physrevb.107.195434
Abstract: We study the collective excitation modes of the Chern insulator states in magic-angle twisted bilayer graphene aligned with hexagonal boron nitride (TBG/BN) at odd integer fillings ($\nu$) of the flat bands. For the $1 \times… read more here.
Keywords: tbg; insulator states; excitation; twisted bilayer ... See more keywords
Impurity-induced current in a Chern insulator
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.115434
Abstract: Chern insulators arguably provide the simplest examples of topological phases. They are characterized by a topological invariant and can be identified by the presence of protected edge states. In this article, we show that a… read more here.
Keywords: bound states; impurity induced; chern insulator; impurity ... See more keywords
Anomalous helical edge states in a non-Hermitian Chern insulator
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.165148
Abstract: A non-Hermitian extension of a Chern insulator and its bulk-boundary correspondence are investigated. It is shown that in addition to the robust chiral edge states that reflect the nontrivial topology of the bulk (nonzero Chern… read more here.
Keywords: chern insulator; edge; edge states; anomalous helical ... See more keywords
Spontaneous symmetry breaking of an interacting Chern insulator on a topological square lattice
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.075204
Abstract: The interplay between topology and correlation lies at the forefront of modern condensed matter physics. In this paper, we study the extended fermion-Hubbard model, including the on-site as well as the nearest-neighbor repulsive interactions, on… read more here.
Keywords: square lattice; topological square; spontaneous symmetry; symmetry breaking ... See more keywords
Interaction-Driven Surface Chern Insulator in Nodal Line Semimetals.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.122.016803
Abstract: Nodal line semimetals are characterized by nontrivial bulk-band crossings, giving rise to almost flat drumheadlike surface states (DSS), which provide an attractive playground where interaction can induce symmetry-broken states and potential emergent phases. Here, we… read more here.
Keywords: nodal line; line semimetals; interaction; surface chern ... See more keywords
Orbital Chern Insulator and Quantum Phase Diagram of a Kagome Electron System with Half-Filled Flat Bands.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.126.117602
Abstract: 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… read more here.
Keywords: quantum phase; phase diagram; orbital chern; chern insulator ... See more keywords
Interacting Chern Insulator in Infinite Spatial Dimensions.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.126.196401
Abstract: We study a generic model of a Chern insulator supplemented by a Hubbard interaction in arbitrary even dimension D and demonstrate that the model remains well defined and nontrivial in the D→∞ limit. Dynamical mean-field… read more here.
Keywords: insulator infinite; spatial dimensions; chern insulator; insulator ... See more keywords