Light Driven Quantum Hall Fluids and Rectified Magnetization Induction
ORAL
Abstract
We generalize Quantum Hall fluid (QHF) hydrodynamics to include the effect of external time
dependent field, such as Quantum Hall state subject to illumination by light( microwave). We show
that linearly polarized light is sufficient to locally induce the dc magnetization due to ponderomotive
effect of light. The rectified effect of light field produces the changes in local carrier density ∼ E2 that
in turn leads to local dc magnetization change. We connect this observation with the conventional
Inverse Faraday Effect , where for a ”longitudinal” electron fluids like metals magnetization is
induced by circularly polarized light. We finally comment on some of the experimental signatures.
We estimate the magnitude of the effect and explore the possibility of creating internal Quantum
Hall edge states inside the fluid by inducing local carrier density.
dependent field, such as Quantum Hall state subject to illumination by light( microwave). We show
that linearly polarized light is sufficient to locally induce the dc magnetization due to ponderomotive
effect of light. The rectified effect of light field produces the changes in local carrier density ∼ E2 that
in turn leads to local dc magnetization change. We connect this observation with the conventional
Inverse Faraday Effect , where for a ”longitudinal” electron fluids like metals magnetization is
induced by circularly polarized light. We finally comment on some of the experimental signatures.
We estimate the magnitude of the effect and explore the possibility of creating internal Quantum
Hall edge states inside the fluid by inducing local carrier density.
*Work was supported by U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under award number DE-SC- 0025580 and by European Research Council under the European Union Seventh Framework ERS-2018-SYG 810451 HERO.
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Presenters
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Alexander V Balatsky
- University of Connecticut