2024 Adiabatic charge pumping rice-mele model

Adiabatic charge pumping rice-mele model

Author: emoj

August undefined, 2024

WebJul 27, 2024 · We employ real-time simulations in finite and infinite systems to calculate the adiabatic charge and spin transport, complemented by the analysis of gaps and the many-body polarization to confirm the adiabatic nature of the pump. Web(b) Adiabatic potentials for N = 3 0 λ/6 3 2 −4 −2 0 2 4 Energy, E/E R 2 0 1 (c) Tight binding model s-band p-band (d) Unraveled Rice-Mele model FIG. 1. Lattice concept. (a) Experimental geometry with a single-frequency Raman beam traveling along e x and N Raman laser beams sharing the same spatial mode traveling along −e x. The level

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WebJul 27, 2024 · The standard realization for Thouless pumping 1, 2 is the time-periodic version of the Rice-Mele (RM) model 3, which describes a dimerized tight-binding chain whose system parameters change... WebApr 7, 2024 · Motivated by this progress, we study the effects of static disorder on topological Thouless charge pumping. We focus on the half-filled Rice-Mele model of … kyle beach assault details

Adiabatic Charge Pumping, Rice-Mele Model Semantic …

Webcharge pump. As the input code varies from 0 to 255, the DAC output ranges rail-to-rail, changing approximately 40mV per step. With a +5V input (VCC) applied to IC1 and a -3V … WebSep 1, 2024 · In this study, the Landau–Zener (LZ) transition method is applied to investigate a weak non-adiabatic effect on the Zak phase and the topological charge pumping in … WebApr 15, 2024 · The study of non-adiabatic effects on a specific example of Thouless pump, the so-called Rice–Mele model , showed the emergence of quadratic corrections in the … kyle bauer obituary

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Topological Charge Pumping in a One-Dimensional Optical …

Web56 4 Adiabatic Charge Pumping, Rice-Mele Model 4.1 Charge Pumping in a Control Freak Way The most straightforward way to operate a charge pump in the Rice … WebOct 7, 2024 · Abstract We study the Rice-Mele (RM) model in the presence of an asymmetric hopping-induced non-Hermitian parameter, γ. In particular, we examine the effect of non-Hermiticity on the... program flexibility requestWebApr 29, 2024 · We employ real-time simulations in finite and infinite systems to calculate the adiabatic charge and spin transport, complemented by the analysis of gaps and the … kyle baxter perry iowa

"WebFigure 2(c) shows the current and pumped charge for pumping cycle T ¼ 40@=E R in the Rice-Mele pumping potential (the band gap is 1:5E R). The sudden onset of pumping causes high frequency oscillations of the current. The pumpedchargeis quantized at times that are multiples of the cycle time T. Our calculations show that modifying " - Adiabatic charge pumping rice-mele model

Adiabatic charge pumping rice-mele model

WebApr 7, 2024 · Effect of disorder on topological charge pumping in the Rice-Mele model Authors: A. L. C. Hayward E. Bertok U. Schneider F. Heidrich-Meisner Abstract Recent experiments with ultracold... WebIn this study, the Landau-Zener (LZ) transition method is applied to investigate a weak non-adiabatic effect on the Zak phase and the topological charge pumping in the Rice-Mele …

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WebThe adiabatic component, charge pump, is placed away from the critical paths. The adiabatic delays are overlapped with the computing path logic delays resulting in no … WebJan 11, 2024 · Model. To illustrate the topological photonic pumping in our microwave waveguide platform, we take advantage of the celebrated Rice-Mele model 57,59.Two essential factors of the Rice-Mele pump ...

WebIn a Thouless pump, an integer amount of charge is pumped per pump cycle when adiabatically changing parameters such that a degeneracy (or critical point) is enclosed without closing a gap. The prototypical model for a non-interacting charge pump, the Rice-Mele model [13], has a single degeneracy at the origin as seen in Fig. 1(a). WebJul 27, 2024 · The standard realization for Thouless pumping 1,2 is the time-periodic version of the Rice-Mele (RM) model 3, which describes a dimerized tight-binding chain …

WebJun 27, 2024 · Panel (b): the energy bands for Rice-Mele Hamiltonian for different values of m, = jt1jj t2jin the 1st Brillouin Zone. The critical point is found at m = 0 and = 0. Panel (c): the pumped charge Q after the completion of a full adiabatic cycle is the winding number around the critical point in the parameter space of the Rice-Mele model. need to ... Web1.Charge pumping protocol. 拓扑泵浦是一种系统的hopping term在周期性绝热循环（adiabatic）中导致的charge pumping process，最直观的表现形式就是Wannier Center在实空间的移动，表现为移动一个晶格常数的距离。为什么随时间周期性绝热演化的hopping会 …

WebAdiabatic Charge Pumping, Rice-Mele Model János K. Asbóth, László Oroszlány, András Pályi Pages 55-68 Current Operator and Particle Pumping János K. Asbóth, László Oroszlány, András Pályi Pages 69-83 Two-Dimensional Chern Insulators: The Qi-Wu-Zhang Model János K. Asbóth, László Oroszlány, András Pályi Pages 85-98 program flies shunwangclouder box logThe most straightforward way to operate a charge pump in the Rice-Mele model is to make sure that the system falls apart at all times to disconnected dimers. This will happen if at any time either the intercell hopping amplitude w , or the intracell hopping amplitude v vanishes. See more According to the result (3.13), the Wannier center positions of a certain band, in units of the lattice constant, are given by the Berry phase of that band divided by … See more Our above results for the smoothly modulated Rice-Mele cycle suggest the interpretation that during a complete cycle, each electron in the filled valence band is … See more So far, the discussed results were obtained for the special case of the smoothly modulated Rice-Mele pumping cycle with average intracell hopping \bar{v} = 1. … See more So far, we have the following picture of an adiabatic pump in a long open chain. If we take a cross section at the middle of the chain, a single particle will be … See more program flea tablets for catsWebIn this study, the Landau-Zener (LZ) transition method is applied to investigate a weak non-adiabatic effect on the Zak phase and the topological charge pumping in the Rice-Mele model. The non-adiaba program flow chart templateWebFeb 22, 2016 · The present approach uses noninteracting lattice models of topological insulators, building gradually on these to arrive from the simplest one-dimensional case (the Su-Schrieffer-Heeger model for... kyle bay cubby houseWebFeb 23, 2016 · In this chapter we construct two-dimensional insulators with nonvanishing Chern numbers, by promoting the time t in a an adiabatic pump cycle on a one-dimensional insulator, to a wavenumber k y . This construction not only gives us control over the Chern number, but also brings with it edge states. kyle bay removals brisbaneWebThe concrete system we use in this chapter is the simplest adiabatic charge pump, obtained by adding staggered onsite potential to the SSH model. It is known as the Rice-Mele (RM) model. We apply the Berry phase and the Chern number to show that the periodically and slowly changing the parameters of a one-dimensional solid, it is possible … kyle baylor scott and whiteWebApr 29, 2024 · Splitting of topological charge pumping in an interacting two-component fermionic Rice-Mele Hubbard model E. Bertok, F. Heidrich-Meisner, A. A. Aligia A Thouless pump transports an integer amount of charge when pumping adiabatically around a … program flow diagram online