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arXiv · 2107.14761

Magnetohydrodynamics and electro-electron interaction of massless Dirac fermions

D. A. Khudaiberdiev·G. M. Gusev·E. B. Olshanetsky·Z. D. Kvon·N. N. Mikhailov
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Abstract

The magnetotransport properties of massless Dirac fermions in a gapless HgTe quantum well are investigated. In samples with narrow channels, a large negative magnetoresistance with a Lorentzian profile is observed, which is interpreted as a manifestation of electron viscosity due to electron-electron interaction. Comparison of experiment with theory yields the shear stress relaxation time of the Dirac fermions caused by electron-electron scattering.

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D. A. Khudaiberdiev, G. M. Gusev, E. B. Olshanetsky, Z. D. Kvon, N. N. Mikhailov. 2021-07-30. Magnetohydrodynamics and electro-electron interaction of massless Dirac fermions. https://doi.org/10.1103/physrevresearch.3.l032031

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