Hall effect at the magnetic-field-tuned superconductor-insulator transition
نویسنده
چکیده
The Hall effect for disordered superconducting films in magnetic field is discussed, with special focus on the vicinity of the magnetic field-tuned superconductor-insulator transition. Evidence is presented that upon ensemble averaging this transition possesses a "hidden" particle/hole symmetry. This symmetry implies that right at the transition the Hall resistance vanishes. Relevance to recent experiments is discussed briefly.
منابع مشابه
Self-duality and a Hall-insulator phase near the superconductor-to-insulator transition in indium-oxide films.
We combine measurements of the longitudinal (ρxx) and Hall (ρxy) resistivities of disordered 2D amorphous indium-oxide films to study the magnetic-field tuned superconductor-to-insulator transition (H-SIT) in the T --> 0 limit. At the critical field, Hc, the full resistivity tensor is T independent with ρxx(Hc) = h/4e(2) and ρxy(Hc) = 0 within experimental uncertainty in all films (i.e., these ...
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presentations: (1) Shahar D (Department of Electrical Engineering, Princeton University) ``Duality and the quantum hall effect''; (2) Pudalov V M (Institute for High Pressure Physics, Troitsk, Russia) ``The metal ± insulator transition in a twodimensional system at zero magnetic field''; (3) Paalanen M (Helsinki) ``Superconductor ± insulator transition in an isolated Josephson junction''; (4) G...
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