Nonuniform near-surface electrostatic potentials flatten surface bands in rhombohedral graphite at zero displacement field, enabling flat-band regimes in thick samples via self-consistent calculations.
In that viewpoint, the layer-potential terms arise from theq= 0 Hartree contribution of charges lo- calized in different layers
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Electrostatically stabilized surface flat bands in rhombohedral graphite at zero displacement field
Nonuniform near-surface electrostatic potentials flatten surface bands in rhombohedral graphite at zero displacement field, enabling flat-band regimes in thick samples via self-consistent calculations.