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Dmitry A. Egorov

Publications and source records attributed to Dmitry A. Egorov.

2 recordsLinked to original sources
arXiv2026

Transport Detection of Whirlpools in GaAs Electron Liquid

We report the formation of large-scale steady-state whirlpools in a GaAs-based two-dimensional electron liquid and demonstrate them by straightforward transport measurements. A whirlpool forming inside a circular cavity adjoining a wide conducting channel appears as a negative four-terminal resistance over a broad range of temperatures and cavity sizes. The effect scales with the Gurzhi length, in quantitative accord with the hydrodynamic analogy. Obtained results firmly establish this analogy and probe the limits of its applicability.

cond-mat.mes-hall↗
arXiv2025

The role of small-angle electron-electron scattering in transverse magnetic focusing experiment

We demonstrate the crucial role of small-angle scattering in transverse magnetic focusing (TMF) in ballistic GaAs/AlGaAs heterostructures. Measurements in various samples show that the role significantly depends on their geometry. We propose a phenomenological model parameterizing this dependence with the angular acceptance of the detecting contact. This model is consistent with the diversity of experimental data and therefore enables accurate extraction of the key characteristic of inter-electron (e-e) interaction $\unicode{x2013}$ the e-e scattering length $\unicode{x2013}$ from TMF experiment, thus turning it into a uniquely effective tool for studying e-e scattering.

cond-mat.mes-hall↗