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Striped quantum Hall state in a half-filled Landau level

机译:半填充Landau层中的条纹量子霍尔状态

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The nature of the fractional quantum Hall state at Landau level filling factor 5/2 remains elusive despite intensive experimental and theoretical work. While the leading theoretical candidates are Moore-Read Pfaffian (Pf) and its particle-hole conjugate anti-Pfaffian (APf), neither received unambiguous experimental support. We show that a state that is intermediate between them, made of alternating stripes of Pf and APf in the bulk, is a viable candidate. Such a state is shown to be incompressible and thus a charge insulator in the bulk, but a heat conductor due to the presence of gapless neutral bulk modes. We argue that the properties of such a state are consistent with existing numerical and experimental work, and discuss possible experimental probes of its presence.
机译:尽管进行了大量的实验和理论工作,但在Landau能级填充因子5/2上的分数量子霍尔态的性质仍然难以捉摸。虽然领先的理论候选者是摩尔-阅读Pfaffian(Pf)及其粒子-空穴共轭抗Pfaffian(APf),但它们均未获得明确的实验支持。我们表明,由Pf和APf的交替条纹构成的介于两者之间的中间状态是可行的候选对象。这种状态显示为不可压缩,因此在主体中是电荷绝缘体,但由于存在无间隙中性主体模式,因此是导热体。我们认为这种状态的性质与现有的数值和实验工作是一致的,并讨论了其存在的可能的实验探针。

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  • 来源
    《Physical review》 |2016年第20期|201303.1-201303.5|共5页
  • 作者

    Xin Wan; Kun Yang;

  • 作者单位

    Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027, China Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China;

    National High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee, Florida 32306, USA Department of Physics, Tsinghua University, Beijing 100084, China;

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