Inverse design of second-order photonic topological insulators in C3-symmetric lattices
Sign Up to like & getrecommendations! Published in 2022 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2021.09.039
Abstract: Abstract Second-order photonic topological insulators (SPTIs) featured with topological edge and corner states provide an intriguing way for steering light in integrated optics. However, existing SPTIs have narrow bulk gaps for tightly confining topological edge… read more here.
Keywords: second order; topological insulators; photonic topological; topological edge ... See more keywords
Highly confined topological edge states from two simple triangular lattices with reversed materials
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126451
Abstract: Abstract In order to perform a simple design of topological edge states, we construct two-dimensional triangular lattices with reversed scatterers and matrix materials. As the p and d orbits in the two lattices are reversed,… read more here.
Keywords: edge states; highly confined; lattices reversed; topological edge ... See more keywords
Near-Field Imaging and Time-Domain Dynamics of Photonic Topological Edge States in Plasmonic Nanochains.
Sign Up to like & getrecommendations! Published in 2021 at "Nano letters"
DOI: 10.1021/acs.nanolett.1c03324
Abstract: Time-domain dynamic evolution properties of topological states play an important role in both fundamental physics study and practical applications of topological photonics. However, owing to the absence of available ultrafast time-domain dynamic characterization methods, studies… read more here.
Keywords: topological edge; time; time domain; edge states ... See more keywords
Observation of Topological Edge States at the Step Edges on the Surface of Type-II Weyl Semimetal TaIrTe4.
Sign Up to like & getrecommendations! Published in 2019 at "ACS nano"
DOI: 10.1021/acsnano.9b04573
Abstract: Topological materials harbor topologically protected boundary states. Recently, TaIrTe4, a ternary transition metal dichalcogenide, was identified as a type-II Weyl semimetal with the minimal nonzero number of Weyl points allowed for a time-reversal invariant Weyl… read more here.
Keywords: edge; edge states; step edges; weyl semimetal ... See more keywords
Experimental observation of anomalous topological edge modes in a slowly driven photonic lattice
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/ncomms13918
Abstract: Topological quantum matter can be realized by subjecting engineered systems to time-periodic modulations. In analogy with static systems, periodically driven quantum matter can be topologically classified by topological invariants, whose non-zero value guarantees the presence… read more here.
Keywords: anomalous topological; edge modes; edge; experimental observation ... See more keywords
Observation of topological edge states in parity–time-symmetric quantum walks
Sign Up to like & getrecommendations! Published in 2017 at "Nature Physics"
DOI: 10.1038/nphys4204
Abstract: Spontaneous parity–time-symmetry breaking and topological edge states are observed in a photonic non-Hermitian system — a quantum walk interferometer. read more here.
Keywords: parity time; topological edge; edge states;
Subwavelength acoustic topological edge states realized by zone folding and the role of boundaries selection
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5051377
Abstract: This article reports a realization of subwavelength acoustic topological edge states realized by a triangular array of hexagonal columns with Helmholtz resonators. Using the strategy of zone folding, Dirac cones can be folded into double… read more here.
Keywords: different interfaces; edge states; nine different; acoustic topological ... See more keywords
Topological edge states at single layer WSe2 1T′–1H lateral heterojunctions
Sign Up to like & getrecommendations! Published in 2020 at "Applied Physics Letters"
DOI: 10.1063/5.0004379
Abstract: Transition metal dichalcogenides can be epitaxially grown at the single layer limit, which also adopt a variety of structural polymorphs with significantly different electronic properties. Lateral heterostructures of different polymorphs can be further synthesized for… read more here.
Keywords: single layer; edge; edge states; spectroscopy ... See more keywords
Weak antilocalization and topological edge states in PdSn4
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Applied Physics"
DOI: 10.1063/5.0145377
Abstract: Here, we report a successful synthesis of single crystals of a topological semimetal (TSM) candidate, PdSn4, using a self-flux route. The synthesized crystal is well characterized through x-ray diffraction (XRD), field emission scanning electron microscopy,… read more here.
Keywords: presence; weak antilocalization; pdsn4; edge states ... See more keywords
Topological edge states of 1D chains and index theory
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Mathematical Physics"
DOI: 10.1063/5.0150870
Abstract: We provide an elementary proof and refinement of a well-known idea from physics: a chiral-symmetric local Hamiltonian on a half-space has the same signed number of edge-localized states with energies in the bulk bandgap as… read more here.
Keywords: physics; edge states; topological edge; index theory ... See more keywords
Tunable topological edge modes in Su–Schrieffer–Heeger arrays
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0152172
Abstract: A potential weakness of topological waveguides is that they act on a fixed narrow band of frequencies. However, by 3D printing samples from a photo-responsive polymer, we can obtain a device whose operating frequency can… read more here.
Keywords: schrieffer heeger; modes schrieffer; tunable topological; edge modes ... See more keywords