High chern number
WebThe observed high-Chern-number and high-temperature Chern insulator states require applying weak magnetic field due to the antiferromagnetic nature of MnBi 2 Te 4 at zero magnetic field. A s the ordinary QHE can also give rise to quantized Hall resistance plateau and vanishing longitudinal resistance, it is necessary to exclude the influence of Landau … Web14 de dez. de 2015 · A magnetic photonic crystal—a photonic crystal made of materials that break Lorentz reciprocity due to their response to an external magnetic field—can have a nonzero Chern number (and associated nonscattering edge states) for electromagnetic …
High chern number
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Webtunable Chern number up to C = 5 [37]. In this work, a sys-tem of multiple layers with alternatingmagneticand undoped topological insulators was fabricated to observe high Chern numbers. Interestingly, the number of undoped topological layers decides the Chern number of the system. Recent studies have established that the nontrivial topolog- Web10 de jul. de 2024 · Many topological phases discovered so far have a Chern number of 1 or 2, but higher values are also theoretically possible. Schröter et al. predicted that the …
Web23 de jul. de 2024 · The experimental discovery of high-Chern-number QHE (C = 2) without Landau levels and C = 1 Chern insulator state displaying a nearly quantized Hall resistance plateau above the Néel temperature in MnBi2Te4 devices is reported. Abstract The quantum Hall effect (QHE) with quantized Hall resistance of h/νe2 started the … Web9 de jul. de 2024 · The high Chern number phases with a Chern number C > 1 have been observed in a recent experiment that was performed on the topological insulator (TI) …
Web1 de jun. de 2024 · The observed high-Chern-number and high-temperature Chern insulator states require applying weak magnetic field due to the antiferromagnetic nature … Web14 de mar. de 2013 · One way to realize a Chern insulator is to start from a time-reversal-invariant TI. These materials, whose topological properties are induced by spin-orbit coupling, were experimentally realized soon after the theoretical predictions in both 2D and 3D systems (12, 13).Breaking the TRS of a suitable TI by introducing ferromagnetism …
Web28 de mar. de 2024 · Chirally stacked N-layer graphene is a semimetal with ±p N band-touching at two nonequivalent corners in its Brillioun zone. We predict that an off-resonant circularly polarized light (CPL) drives chirally stacked N-layer graphene into a Floquet Chern insulators (FCIs), aka quantum anomalous Hall insulators, with tunable high Chern …
WebThe Chern number Q associated to our structure is defined via the sum of the Berry fluxes of all the plaquettes forming the closed torus surface: Q D 1 2 X nm F nm: (2.13) The fact that the Chern number Q is defined via the gauge invariant Berry fluxes ensures that Q itself is gauge invariant. Furthermore, taking the arg of Eq.(2.12) how many indians have won nobel prizeWebWe report the experimental discovery of high-Chern-number (C = 2) quantum Hall effect without Landau levels and C = 1 Chern insulator state above the Néel temperature in MnBi 2 Te 4 devices. Abstract . View article; Supplementary data; 4D spinless topological insulator in a periodic electric circuit. howard gardner\u0027s learning stylesWeb4 de ago. de 2024 · At high power (Fig. 2c), ... Chern number calculation of the nonlinearly induced potential. As mentioned in the main text, the topological invariant describing a traditional ... howard gardner theory summaryWeb12 de nov. de 2024 · Skyrmions with the topological number Q equal to an integer larger than 1 are called high-topological-number skyrmions or high-Q skyrmions. In this work, we theoretically study the topological Hall effect in square-lattice high-Q skyrmion crystals (SkXs) with Q = 2 and Q = 3.As a result of the emergent magnetic field, the Landau-level … howard garrett blackfishWeb3 de dez. de 2024 · Topological photonic systems have recently emerged as an exciting new paradigm to guide light without back-reflections. The Chern topological numbers of a photonic platform are usually written in ... how many indians in austriaWeb6 de dez. de 2013 · It is shown that the spin-Chern number can takes an arbitrary high value for certain QH systems. This is a new type of topological insulators, which we may call high spin-Chern insulators. howard gardner theory of playWeb10 de jul. de 2024 · The high-Chern number phases with a Chern number C>1 have been observed in a recent experiment that performed on the topological insulator (TI) … how many indians in bc