Electronic Quality

Proximity Screening Boosts Graphene's Electronic Quality

Proximity screening using atomically thin hBN and graphite gates significantly enhances the electronic quality of graphene, achieving record-high quantum mobilities (~10^7 cm^2/Vs), exceptional charge homogeneity, and enabling the observation of Landau quantization and quantum Hall effects at millitesla magnetic fields, although it suppresses some many-body phenomena.