Domain textures in the fractional quantum Hall effect

ORAL

Abstract

Domain textures in the disordered bulk of fractional quantum Hall effect (FQHE) systems are probed by resonant inelastic light scattering. Domains with different characteristic sizes are found to have distinct impacts of breakdown of wave vector conservation on low-lying neutral excitations. We demonstrate that large domains of quantum fluids in the bulk support long-wavelength neutral collective excitations with well-defined wave vector (momentum) dispersion that could be interpreted by theories for uniform phases [1]. At filling factor v = 1/3 we consider interpretations based on graviton excitations predicted by geometrical theories [2,3] and earlier interpretations based on two-roton bound states [4,5]. The results offer significant experimental access to strong electron correlation physics in the FQHE.

[1] Z. Liu et al., submitted to Phys. Rev. Lett.; [2] S.-F. Liou et al., Phys. Rev. Lett. 123, 146801 (2019); [3] D. X. Nguyen and D. T. Son, Phys. Rev. Res. 3, 023040 (2021); [4] C. F. Hirjibehedin et al., Phys. Rev. Lett. 95, 066803 (2005); [5] K. Park and J. K. Jain, Phys. Rev. Lett. 84, 5576 (2000).

*Supported by the NSF award DMR-1306976. U.W. was supported by DFG, German Research Foundation under projects Wu 637/4-1, 4-2, 7-1. L.D. was supported by the Fundamental Research Funds for the Central Universities (Grant No. 14380146) and National Natural Science Foundation of China (Grant No. 12074177). L.N.P. was supported by the Gordon and Betty Moore Foundation grant GBMF9615, and by the NSF grant DMR-1420541. M.J.M. was supported by the U.S. DOE grant DE-SC0020138.

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Publication: Z. Liu et al., Domain textures in the fractional quantum Hall effect, submitted to Phys. Rev. Lett. (2021).

Presenters

  • Ziyu Liu

    • Columbia University

Authors

  • Ziyu Liu

    • Columbia University

  • Ursula Wurstbauer

    • University of Münster

  • Lingjie Du

    • Nanjing University

  • Kenneth W West

    • Princeton University
    • Princeton university

  • Loren N Pfeiffer

    • Princeton University
    • Princeton University, Princeton, New Jersey 08544, USA

  • Michael J Manfra

    • Department of Physics and Astronomy, Birck Nanotechnology Center, and Microsoft Quantum Lab Purdue, Purdue University
    • Purdue University
    • Purdue University, West Lafayette, Indiana 47907, USA

  • Aron Pinczuk

    • Columbia University