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arXiv 1406.2263cond-mat.mes-hall
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实验限制和$ν=5/2$上可能的量子霍尔态

Experimental constraints and a possible quantum Hall state at $ν=5/2$

Guang Yang, D. E. Feldman

摘要:

已经提出了几种拓扑序来解释在$ν=5/2$的量子霍尔平台。在样品边缘上观察到上游中性模式[Bid等人,Nature(London)466,585(2010)]支持非阿贝尔反普弗伦状态。另一方面,隧道实验[Radu等人,Science 320,899(2008); Lin等人,Phys. Rev. B 85,165321(2012); Baer等人,arXiv:1405.0428]有利于Halperin 331状态,其不表现出上游模式。我们发现一个拓扑秩序,兼容的结果,这两种类型的实验。该顺序允许有限和零自旋极化。它是阿贝尔的,但它在阿哈罗诺夫-玻姆干涉测量中的特征可以类似于普费伦态和反普费伦态。

英文摘要:

Several topological orders have been proposed to explain the quantum Hall plateau at $ν=5/2$. The observation of an upstream neutral mode on the sample edge [Bid et al., Nature (London) 466, 585 (2010)] supports the non-Abelian anti-Pfaffian state. On the other hand, the tunneling experiments [Radu et al., Science 320, 899 (2008); Lin et al., Phys. Rev. B 85, 165321 (2012); Baer et al., arXiv:1405.0428] favor the Halperin 331 state which exhibits no upstream modes. We find a topological order, compatible with the results of both types of experiments. That order allows both finite and zero spin polarizations. It is Abelian but its signatures in Aharonov-Bohm interferometry can be similar to those of the Pfaffian and anti-Pfaffian states.

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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