Exciton Transport in a Bilayer Quantum Hall Superfluid

20th International Conference on the Application of High Magnetic Fields in Semiconductor Physics

Eisenstein, J.P.^1 ; Finck, A.D.K.^1 ; Nandi, D.^1 ; Pfeiffer, L.N.^2 ; West, K.W.^2

Department of Physics, California Institute of Technology, Pasadena, CA 91125, United States^1

Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, United States^2

关键词: Degree of freedom;    Exciton transport;    Excitonic ground state;    Multiply connected geometry;    Neutral transport;    Quantum Hall state;    Quantum Hall systems;    Quasiparticles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/456/1/012009/pdf
DOI  :  10.1088/1742-6596/456/1/012009

来源: IOP

【 摘 要 】

Bilayer quantum Hall systems at vT1 support an excitonic ground state. In addition to the usual charged quasiparticles, this system possesses a condensate degree of freedom: exciton transport. Detection of this neutral transport mode is facilitated by the use of the Corbino multiply-connected geometry in which charge transport is suppressed. We here summarize our recent experiments on Corbino devices which directly demonstrate exciton transport across the bulk of the incompressible vT1 quantum Hall state.