Spin imaging of Poiseuille flow of a viscous electronic fluid

Recent progress in fabricating high-quality conductors with small densities of defects has initiated studies a viscous electron fluid and motivated the search for evidence hydrodynamic regime transport. In this Letter we come up spin imaging technique, which can allow to attest emergence flows. Using numerical calculations, examine specific inhomogeneous distributions density injected sample Poiseuille flow fluid. We also demonstrate that Hanle curves (the dependencies on magnetic field) at different positions across channel acquire relative phase shifts resulting from space variation velocity. The studied effects be employed detect map noninvasively.