A Wigner crystal on helium shows nonlinear velocity saturation at 150 MHz, explained by Bragg-Cherenkov coupling to higher-order ripplon overtones.
Wigner polarons reveal Wigner crystal dynamics in a monolayer semiconductor,
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A self-consistent Hartree-Fock calculation yields the band structure and static dielectric response of a spin-polarized Wigner crystal in monolayer WSe2, showing reduced screening at low carrier density.
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High-frequency nonlinear conductivity of a Wigner crystal
A Wigner crystal on helium shows nonlinear velocity saturation at 150 MHz, explained by Bragg-Cherenkov coupling to higher-order ripplon overtones.
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Dielectric function in WSe2
A self-consistent Hartree-Fock calculation yields the band structure and static dielectric response of a spin-polarized Wigner crystal in monolayer WSe2, showing reduced screening at low carrier density.