Incompressible quantum Hall fluid
ID: incompressible-quantum-hall-fluid
An incompressible quantum Hall fluid has a bulk spectral gap against charged excitations; disorder can localize excess quasiparticles.[ref]
Anomalous Quantum Hall Effect: An Incompressible Quantum Fluid with Fractionally Charged Excitations by Robert Laughlin. pp. 1397–1398, incompressibility and impurity localization
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