= Compressible quantum Hall edge strip
A <compressible quantum Hall edge strip> is an edge region where a <Landau level> is partly occupied and nearby states permit the local <electron> density to adjust. This adjustment screens the confining field and tends to flatten the effective <energy> of that level near the <chemical potential>.
It contrasts with an <incompressible quantum Hall edge strip>, where a gap suppresses the corresponding density response. Their alternating arrangement is a self-consistent property of <electrons> and the confining electrostatics, rather than simply a drawing of unperturbed levels through a fixed potential. Finite <temperature>, disorder and interactions can modify the ideal strip structure.<Electrostatics of edge channels by D. B. Chklovskii and others>[Abstract and screened-edge electrostatic model]{ref}
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