Large-N Chern insulators: Lattice field theory and quantum simulation approaches to correlation effects in the quantum anomalous Hall effect
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Physics"
DOI: 10.1016/j.aop.2022.168763
Abstract: Four-Fermi quantum field theories in (2+1) dimensions lie among the simplest models in high-energy physics, the understanding of which requires a non-perturbative lattice formulation addressing their strongly-coupled fixed points. These lattice models are also relevant… read more here.
Keywords: anomalous hall; chern insulators; field; quantum anomalous ... See more keywords
Unconventional sequence of correlated Chern insulators in magic-angle twisted bilayer graphene
Sign Up to like & getrecommendations! Published in 2021 at "Nature Physics"
DOI: 10.1038/s41567-021-01347-4
Abstract: 1Department of Physics, Harvard University, Cambridge, MA 02138, USA 2Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 3Research Center for Functional Materials, National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan… read more here.
Keywords: chern insulators; sequence correlated; unconventional sequence; physics ... See more keywords
Tunable second-order topological insulators in Chern insulators 2H-FeX2 (X = Cl and Br)
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0151542
Abstract: Engineering topological states in two-dimensional (2D) magnets is of pivotal importance to provide significantly rich physics and application potential. Here, we theoretically demonstrate that the second-order topological insulators (SOTIs) with robust nontrivial corner states can… read more here.
Keywords: physics; topological insulators; order topological; second order ... See more keywords
Orbital dynamics in 2D topological and Chern insulators
Sign Up to like & getrecommendations! Published in 2021 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ac29fc
Abstract: Within a relativistic quantum formalism we examine the role of second-order corrections caused by the application of magnetic fields in two-dimensional topological and Chern insulators. This allows to reach analytical expressions for the change of… read more here.
Keywords: topological chern; chern insulators; orbital dynamics; dynamics topological ... See more keywords
Acoustic Valley Spin Chern Insulators
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.16.014058
Abstract: The valley topological phases and transport phenomena for classical waves have attracted a great deal of attention. We realize valley spin Chern insulators in bilayer phononic crystals of a square lattice, whose topological invariants are… read more here.
Keywords: layer; topological phases; chern insulators; spin chern ... See more keywords
Intertwined order in fractional Chern insulators from finite-momentum pairing of composite fermions
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.101.245154
Abstract: We investigate the problem of intertwined orders in fractional Chern insulators by considering lattice fractional quantum Hall (FQH) states arising from pairing of composite fermions in the square-lattice Hofstadter model. At certain filling fractions, magnetic… read more here.
Keywords: chern insulators; composite fermions; finite momentum; fractional chern ... See more keywords
Dissipative preparation of many-body Floquet Chern insulators
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.184302
Abstract: Considering coupling to a microstructured bath as a relaxation mechanism in a periodically driven dissipative Haldane model, we establish that the system may be tuned to a stroboscopic topological steady state at all finite temperatures.… read more here.
Keywords: many body; body; topology; haldane model ... See more keywords
Tensor theory for higher-dimensional Chern insulators with large Chern numbers
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.085113
Abstract: Kai Wang, ∗ Jia-Xiao Dai, ∗ L. B. Shao, 2, † Shengyuan A. Yang, and Y. X. Zhao 2, ‡ National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China… read more here.
Keywords: higher dimensional; dimensional chern; insulators large; tensor theory ... See more keywords
Detecting Fractional Chern Insulators in Optical Lattices through Quantized Displacement.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.236401
Abstract: The realization of interacting topological states of matter such as fractional Chern insulators (FCIs) in cold atom systems has recently come within experimental reach due to the engineering of optical lattices with synthetic gauge fields… read more here.
Keywords: fractional chern; insulators optical; detecting fractional; optical lattices ... See more keywords
Polaritonic Chern Insulators in Monolayer Semiconductors.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.043801
Abstract: Systems with strong light-matter interaction open up new avenues for studying topological phases of matter. Examples include exciton polaritons, mixed light-matter quasiparticles, where the topology of the polaritonic band structure arises from the collective coupling… read more here.
Keywords: matter; light matter; polaritonic chern; monolayer semiconductors ... See more keywords
Emergent Multi-Flavor QED3 at the Plateau Transition between Fractional Chern Insulators: Applications to Graphene Heterostructures
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review X"
DOI: 10.1103/physrevx.8.031015
Abstract: Recent experiments in graphene heterostructures have observed Chern insulators - integer and fractional Quantum Hall states made possible by a periodic substrate potential. Here we study theoretically the competition between different Chern insulators, which can… read more here.
Keywords: chern insulators; transition; graphene heterostructures; emergent multi ... See more keywords