Magnetohydrodynamics and electro-electron interaction of massless Dirac fermions
arXiv:2107.14761 · doi:10.1103/PhysRevResearch.3.L032031
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.
arXiv comment8 pages , 9 figures
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