2000/02/29 by I. B. Spielman, J. P. Eisenstein, L. N. Pfeiffer +1 · 6 citations
Physics and Astronomy · #Condensed matter physics #Conductance #Coulomb #Electron #Ferromagnetism #Filling factor #Ground state #Landau quantization #Magnetic properties of thin films #Physics #Physics of Superconductivity and Magnetism #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.84.5808
published as Phys. Rev. Lett. 84 5808 (2000) · 4 pages, 3 figures, 2 minor typeos fixed
arxiv created 2000/02/29 · openalex publication_date 2000/06/19 · arxiv updated 2012/12/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 nuT=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.