APS Logo

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).

–

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