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QUANTUM HALL EFFECT

Next-level composite fermions

Nature Physics volume 15, pages 883–884 (2019)Cite this article

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A rich pattern of fractional quantum Hall states in graphene double layers can be naturally explained in terms of two-component composite fermions carrying both intra- and interlayer vortices.

At first blush, accounting for the cornucopia of fractional quantum Hall states arising from the correlated motion of electrons in a single two-dimensional layer of electrons appears to be a difficult task. Luckily, it admits an elegant description in terms of emergent particles called composite fermions, which are born when each electron captures an even number of quantized vortices of the microscopic wave function. A large majority of the observed fractional quantum Hall states are accounted for as the integer quantum Hall states of composite fermions. Now, two groups writing in Nature Physics show that even more intricate composite fermions can exist in double-layer structures1,2.

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Fig. 1: Evolution of electronic correlations as a function of layer separation at ν = 1/4.

References

  1. Liu, X. et al. Nat. Phys. https://doi.org/10.1038/s41567-019-0546-0 (2019).

  2. Li, J. I. A. et al. Nat. Phys. https://doi.org/10.1038/s41567-019-0547-z (2019).

  3. Eisenstein, J. P. Annu. Rev. Condens. Matter Phys. 5, 159–181 (2014).

  4. Suen, Y. W., Engel, L., Santos, M. B., Shayegan, M. & Tsui, D. C. Phys. Rev. Lett. 68, 1379–1382 (1992).

  5. Eisenstein, J. P., Boebinger, G. S., Pfeiffer, L. N., West, K. W. & He, S. Phys. Rev. Lett. 68, 1383–1386 (1992).

  6. Halperin, B. I. Helv. Acta Phys. 56, 75–102 (1983).

  7. Scarola, V. W. & Jain, J. K. Phys. Rev. B 64, 085313 (2001).

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Authors and Affiliations

  1. Department of Physics and Astronomy, Purdue University, West Lafayette, IN, USA

    Gábor A. Csáthy

  2. Department of Physics, The Pennsylvania State University, University Park, PA, USA

    Jainendra K. Jain

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  1. Gábor A. Csáthy
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  2. Jainendra K. Jain
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Correspondence to Gábor A. Csáthy or Jainendra K. Jain.

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Csáthy, G.A., Jain, J.K. Next-level composite fermions. Nat. Phys. 15, 883–884 (2019). https://doi.org/10.1038/s41567-019-0572-y

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