Phys. Rev. Lett. 84, 5808–5811 (2000)Resonantly Enhanced Tunneling in a Double Layer Quantum Hall FerromagnetReceived 16 February 2000; published in the issue dated 19 June 2000 The tunneling conductance between two parallel 2D electron systems has been measured in a regime of strong interlayer Coulomb correlations. At total Landau level filling νT = 1 the tunnel spectrum changes qualitatively when the boundary separating the compressible phase from the ferromagnetic quantized Hall state is crossed. A huge resonant enhancement replaces the strongly suppressed equilibrium tunneling characteristic of weakly coupled layers. The possible relationship of this enhancement to the Goldstone mode of the broken symmetry ground state is discussed. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.5808
DOI:
10.1103/PhysRevLett.84.5808
PACS:
71.10.Pm, 73.40.Hm, 73.40.Gk
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