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Quantized Hall effects in bilayers and insystems with spin degeneracy.•J.P. Eisenstein,Exciton Condensation in Bilayer Quantum HallSystems(arXiv:1306.0584)•S. M. Girvin and A. H. MacDonald,Multicomponent QuantumHall Systems: The Sum of their Parts and More, inPerspectivesin Quantum Hall Effects, edited by Das Sarma and Pinczuk(Wiley, 1997)
Bilayer Systems in theQuantum Hall Regime•Show many new phenomena not seen in single layer systems.•Example:Layer-coherent quantized Hall state at total filling f=1.•State depends on Coulomb interactions between the layers;requires separation less than 1.7lB.•System showsquantized Hall conductance for total electriccurrentflowing in two layers (ρxy= h/e2,ρxx= 0.)•System behaves like asuperfluidforcounterflowingcurrents intwo layers: (ρxx=ρxy= 0.)•Leads to phenomenon ofquantized Hall drag.
Quantized Hall Drag
Charged excitations in a QHE system withspin degeneracy.
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Physics,Condensed matter physics,Quantum Hall effect,quantum Hall,quantized Hall,Bilayer Quantum Hall