Nonnegative magnetoresistance in hydrodynamic regime of electron fluid transport in two-dimensional materials

@article{Huang2021NonnegativeMI,
  title={Nonnegative magnetoresistance in hydrodynamic regime of electron fluid transport in two-dimensional materials},
  author={Yunfan Huang and Moran Wang},
  journal={Physical Review B},
  year={2021}
}
Electron transport in ultraclean two-dimensional materials has received much attention. However, the sign of the magnetoresistance effect in various electron flow regimes remains controversial. In this work, the complete electron Boltzmann transport equation is numerically solved with the discrete ordinate method in the real space to clarify the condition of the negative magnetoresistance effect under a weak magnetic field. It turns out from the numerical results that this effect occurs only… 
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