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首页> 外文期刊>Physical review >Electron-electron interaction effects in Floquet topological superconducting chains: Suppression of topological edge states and crossover from weak to strong chaos
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Electron-electron interaction effects in Floquet topological superconducting chains: Suppression of topological edge states and crossover from weak to strong chaos

机译:浮球型拓扑超导链中的电子-电子相互作用效应:拓扑边缘态的抑制和从弱混沌到强混沌的交叉

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摘要

We study the effects of electron-electron interaction in a Floquet topological superconducting chain using the exact diagonalization and the dynamics simulation of quenching process. It is found that a weak interaction can lead to a multitude of tiny avoided crossings in quasienergy spectra, indicating the emergence of chaos, and that the Floquet topological superconducting state can be robust against the weak chaos. With increasing the interaction strength, there is a crossover from weak to strong chaos. On the other hand, the survival probability of Majorana edge modes vanishes and so the Floquet system is transformed into a topologically trivial phase.
机译:我们使用精确的对角化和淬灭过程的动力学模拟,研究了Floquet拓扑超导链中电子相互作用的影响。发现弱相互作用可以导致准能谱中许多微小的避免的交叉,表明出现了混沌,并且Floquet拓扑超导态可以抵抗弱混沌。随着交互强度的增加,存在从弱到强的混乱的过渡。另一方面,Majorana边缘模式的生存概率消失,因此Floquet系统被转换为拓扑无关紧要的阶段。

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  • 来源
    《Physical review》 |2016年第7期|075145.1-075145.7|共7页
  • 作者单位

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

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