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arXiv 1709.07928cond-mat.mes-hall
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基于分数量子霍尔效应自旋跃迁的赝费米子支撑平台

Parafermion supporting platform based on spin transitions in the fractional quantum Hall effect regime

Tailung Wu, Aleksandr Kazakov, George Simion, Zhong Wan, Jingcheng Liang, Kenneth W. West, Kirk Baldwin, Loren N. Pfeiffer, Yuli Lyanda-Geller, Leonid P. Rokhinson

摘要:

我们提出了一个实验上可行的系统的基础上自旋跃迁的分数量子霍尔效应制度,parafermions,高阶非阿贝尔激发,可以潜在地实现。我们提供了一个概念验证的实验表明,在专门设计的异质结自旋跃迁在填充因子2/3可以静电诱导,允许局部控制的极化和按需形成的螺旋畴壁与分数电荷激发,parafermions形成的先决条件成分。我们还提出了精确的对角化数值研究的域之间形成的域壁不同的自旋极化的分数量子霍尔效应制度,并表明它们确实具有电子和磁性结构时,耦合到s波超导体形成所需的parafermion。

英文摘要:

We propose an experimentally-feasible system based on spin transitions in the fractional quantum Hall effect regime where parafermions, high-order non-abelian excitations, can be potentially realized. We provide a proof-of-concept experiments showing that in specially designed heterostructures spin transitions at a filling factor 2/3 can be induced electrostatically, allowing local control of polarization and on-demand formation of helical domain walls with fractionalized charge excitations, a pre-requisite ingredient for parafermions formation. We also present exact diagonalization numerical studies of domain walls formed between domains with different spin polarization in the fractional quantum Hall effect regime and show that they indeed possess electronic and magnetic structure needed for parafermion formation when coupled to an s-wave superconductor.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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