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Adiabatic charge pumping rice-mele model

WebAdiabatic circuits are low-power electronic circuits which use "reversible logic" to conserve energy. The term "adiabatic" refers to an ideal thermodynamic process in which no heat … WebMar 9, 2024 · Our findings show that despite its topological nature, this phenomenon is not generically robust to nonadiabatic effects. Indeed, we find that the Floquet diagonal …

Unconventional pumping in non-Hermitian Rice-Mele model

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 … WebApr 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 … green peas tree https://bennett21.com

Thouless pumping in disordered photonic systems Light ... - Nature

The 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 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 model. The non-adiaba WebOct 19, 2024 · The adiabatic pump protocol that we choose is the Rice–Mele model 42, which is a bipartite array generated by periodically modulating the on-site energies and … green peas uses

Rice-Mele Hubbard model

Category:Rice-Mele Hubbard model

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Adiabatic charge pumping rice-mele model

Non-adiabatic extension of the Zak phase and charge pumping in …

WebFeb 23, 2016 · It is known as the Rice-Mele (RM) model. No full-text available ... For systems in 1D protected by chiral or particle-hole symmetries the Zak phase is a … 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

Adiabatic charge pumping rice-mele model

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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 …

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... WebApr 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 …

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 … 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 …

WebFeb 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.

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... green peas vs english peasWebIn 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 … green peas vs chickpeasWebAdiabatic charge pumping, Rice-Mele model.- Current operator and particle pumping.- Two-dimensional Chern insulators - the Qi-Wu-Zhang model.- Continuum model of localized states at a domain wall.- Time-reversal symmetric two-dimensional topological insulators - the Bernevig-Hughes-Zhang model.-The Z2 invariant of two-dimensional … green peas temperatureWebThe 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 … green peas \\u0026 pearl onionsWebFigure 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 fly shooter gunWeb(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 green peas vs black beansWebAug 31, 2024 · (a) Rice-Mele model. (b) Sketch of the protocol for charge pumping in the parameter space of the Rice-Mele model. (c) Transported charge as a function of angle ϕ in the Δ − (t 1 − t 2) plane for different values of L. The path for the pump is parameterized as t 1 = 1 − 0.5 cos ϕ, t 2 = 1 + 0.5 cos ϕ, and Δ = 2 / 3 sin ϕ. (d) The ... flyshooter bug gun