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Plasmonic Drag in a Flowing Fermi Liquid by Gao, Haoyang; Dong, Zhiyu; Levitov, Leonid is a scholarly article available to read on EtoBox.

What is Plasmonic Drag in a Flowing Fermi Liquid about?

Collective modes in two-dimensional electron fluids show an interesting response to a background carrier flow. Surface plasmons propagating on top of a flowing Fermi liquid acquire a non-reciprocal character manifest in a $\pm k$ asymmetry of mode dispersion. The nonreciprocity arises due to Fermi surface polarization by the flow. The flow-induced interactions between quasiparticles make collective modes of the system uniquely sensitive to subtle "motional" Fermi-liquid effects. The flow-induced Doppler-type frequency shift of plasmon resonances, arising due to electron interactions, can strongly deviate from the classical value. This opens a possibility to directly probe motional Fermi-liquid effects in plasmonic near-field imaging experiments.

Author

Gao, Haoyang; Dong, Zhiyu; Levitov, Leonid

Published

2019

Language

EN