At 4K, microwave scattering measurements on a gated GaAs 2DEG under DC current resolve forward and backward plasmon speeds, matching vp0 plus or minus v0 and confirming non-reciprocity.
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Microwave-regime demonstration of plasmonic non-reciprocity in a flowing two-dimensional electron gas
At 4K, microwave scattering measurements on a gated GaAs 2DEG under DC current resolve forward and backward plasmon speeds, matching vp0 plus or minus v0 and confirming non-reciprocity.