Spin diffusion in GaAs quantum wells speeds up as Hall-bar channels narrow, especially at low electron density, because the channel edges have lower electron density and faster local diffusion.
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Enhancing Spin Diffusion in GaAs Quantum Wells: The Role of Electron Density and Channel Width
Spin diffusion in GaAs quantum wells speeds up as Hall-bar channels narrow, especially at low electron density, because the channel edges have lower electron density and faster local diffusion.