Physical Review Letters · 2003 · 537 citations · 12 references
Natural SciencesPhysicsCondensed Matter PhysicsElectromagnetismQuantum MechanicsDissipative SystemsElectron TransportMagnetism In SolidsQuantum Hall PhysicsStrongly Correlated Electron SystemsCarrier Transport In Low-dimensional SystemsGround State PropertiesHall EffectLandau LevelsQuantum Transport EffectsTransport In Low-dimensional SystemsTwo-dimensional Electron SystemsTwo-dimensional Magnetism
In an ultraclean 2D electron system (2DES) subjected to crossed millimeterwave (30-150 GHz) and weak (B<2 kG) magnetic fields, a series of apparently dissipationless states emerges as the system is detuned from cyclotron resonances. Such states are characterized by an exponentially vanishing low-temperature diagonal resistance and a classical Hall resistance. The activation energies associated with such states exceed the Landau level spacing by an order of magnitude. Our findings are likely indicative of a collective ground state previously unknown for 2DES.
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Coupled electron-hole transport
Uri Sivan, P. M. Solomon, Hadas Shtrikman · Physical Review Letters · 1992 · 389 citations