Asymmetry of the geometrical resonances of composite fermions

Guangyue Ji and Junren Shi
Phys. Rev. B 101, 235301 – Published 1 June 2020

Abstract

We propose an experiment to test the uniform-Berry-curvature picture of composite fermions. We show that the asymmetry of geometrical resonances observed in a periodically modulated composite fermion system can be explained with the uniform-Berry-curvature picture. Moreover, we show that an alternative way of modulating the system, i.e., modulating the external magnetic field, will induce an asymmetry opposite to that of the usual periodic grating modulation which effectively modulates the Chern-Simons field. The experiment can serve as a critical test of the uniform-Berry-curvature picture and probe the dipole structure of composite fermions proposed by Read.

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  • Received 20 January 2020
  • Revised 20 May 2020
  • Accepted 20 May 2020

DOI:https://doi.org/10.1103/PhysRevB.101.235301

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Guangyue Ji1 and Junren Shi1,2,*

  • 1International Center for Quantum Materials, Peking University, Beijing 100871, China
  • 2Collaborative Innovation Center of Quantum Matter, Beijing 100871, China

  • *junrenshi@pku.edu.cn

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Issue

Vol. 101, Iss. 23 — 15 June 2020

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