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topological flat bands in frustrated kagome lattice cosn

topological flat bands in frustrated kagome lattice cosn

topological flat bands in frustrated kagome lattice cosn

(PDF) Kagome van-der-Waals Pd3P2S8 with flat band

Dec 02, 2020 · One particular important structure is a kagome lattice with its potentially diverse and vibrant physics. We report a van-der-Waals kagome lattice Altmetric Topological flat bands in frustrated kagome Topological flat bands in frustrated kagome lattice CoSn. Overview of attention for article published in Nature Communications, August 2020. Topological flat bands in frustrated kagome lattice CoSn Published in:Nature Communications, August 2020 DOI:10.1038/s41467-020-17465-1:

Artificial flat band systems:from lattice models to

Despite the lack of simple topological at band models in two or more Figure 5. Examples of photonic at bands:(a) Kagome lattice for terahertz spoof plasmons, Artificial flat band systems:from lattice models to experiments Fantastic flat bands and where to find them:The CoSn-type Orbital-selective Dirac fermions and extremely flat bands in frustrated kagome-lattice metal CoSn Zhonghao Liu , M. Li , +12 authors S. Wang Materials Science, Physics Fermionâboson many-body interplay in a frustrated logical band structures13. Recently, the transition metal-based kagome metals413 are emerging as a new class of topological quantum materials to explore the interplay between frustrated lat-tice geometry, nontrivial band topology, symmetry-breaking order, and many-body interaction. A kagome lattice tight-binding model

Field-induced topological Hall effect and double-fan spin

Geometric frustration in the kagome lattice makes it a great host for the flat electronic band, nontrivial topological properties, and novel magnetism. Here, we use magnetotransport measurements to map out the field-temperature phase diagram of the centrosymmetric $\mathrm{Y}{\mathrm{Mn}}_{6}{\mathrm{Sn}}_{6}$ with a Mn kagome lattice and show that the system exhibits the topological Hoi Chun Po - Google ScholarTopological flat bands in frustrated kagome lattice CoSn M Kang, S Fang, L Ye, HC Po, J Denlinger, C Jozwiak, A Bostwick, arXiv preprint arXiv:2002.01452 , 2020 Linda Ye - Google ScholarTopological flat bands in frustrated kagome lattice CoSn M Kang, S Fang, L Ye, HC Po, J Denlinger, C Jozwiak, A Bostwick, Nature Communications 11, 4004 , 2020

MIT Department of Physics

MIT Department of Physics Web Site. Area of Physics:Condensed Matter Experiment. Research Interests. Research in Checkelsky lab focuses on the study of exotic electronic states of matter through the synthesis, measurement, and control of solid state materials. Orbital-selective Dirac fermions and extremely flat bands Here, we present close-to-textbook kagome bands with orbital differentiation physics in CoSn, which can be well described by a minimal tight-binding model with single-orbital hopping in Co kagome lattice. The capping flat bands with bandwidth less than 0.2 eV run through the whole Brillouin zone, especially the bandwidth of the flat band of out Orbital-selective Dirac fermions and extremely flat bands Here, we present close-to-textbook kagome bands with orbital differentiation physics in CoSn, which can be well described by a minimal tight-binding model with single-orbital hopping in Co kagome lattice. The capping flat bands with bandwidth less than 0.2 eV run through the whole Brillouin zone, especially the bandwidth of the flat band of out

Orbital-selective Dirac fermions and extremely flat bands

Jan 31, 2020 · Layered kagome-lattice 3d transition metals are emerging as an exciting platform to explore the frustrated lattice geometry and quantum topology. However, the typical kagome electronic bands, characterized by sets of the Dirac-like band capped by a phase-destructive flat band, have not been clearly observed, and their orbital physics are even less well investigated. Here, we present Phys. Rev. B 102, 075148 (2020) - Flat bands in the CoSn Aug 31, 2020 · Quantum interference on the kagome lattice generates electronic bands with narrow bandwidth, called flat bands. Crystal structures incorporating this lattice can host strong electron correlations with nonstandard ingredients, but only if these bands lie at the Fermi level. In the six compounds with the CoSn structure type (FeGe, FeSn, CoSn, NiIn, RhPb, and PtTl) the transition Topological Magnon Bands in a Kagome Lattice on the kagome lattice, where one notes the perfectly flat band on top, which corresponds to the localized excitation. One also sees that the middle band is dispersive and meets the flat band at quadratic touching points. Interestingly, these touching points are protected by real space topology [17], where additional interaction terms may open a gap

Topological magnon bands and unconventional thermal

bilayer triangular-lattice antiferromagnetic system will exhibit topological magnon bands and topological thermal Hall effect in the absence of an intrinsic DMI. These unconventional topological magnon features are present as a result of magnetic-field-induced non-coplanar spin configurations with nonzero scalar spin chirality.Topological flat bands in frustrated kagome lattice CoSnwe report the direct observation of topological flat bands in the vicinity of the Fermi level in frustrated kagome system CoSn, using angle-resolved photoemission spectroscopy and band structure calculations. The flat band manifests itself as a dispersionless electronic excitation

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