Tunneling in double-layered quantum Hall systems
- 15 January 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 47 (4) , 2265-2270
- https://doi.org/10.1103/physrevb.47.2265
Abstract
We study interlayer tunneling in some double-layered quantum Hall states that contain a neutral gapless superfluid mode. A tunneling current less than a certain critical value will not cause any voltage drop between the two layers. A finite voltage V between the layers will induce an ac current with a frequency ω=eV/ħ. In contrast to tunneling between superconductors, the critical current here is linear rather than quadratic in the tunneling amplitude.Keywords
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