Interaction effects and pseudogap in two-dimensional lateral tunnel junctions

P. Jiang, I. Yang, W. Kang, L. N. Pfeiffer, K. W. Baldwin, K. W. West

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Abstract

Tunneling characteristics of a two-dimensional lateral tunnel junction are reported. A pseudogap on the order of Coulomb energy is detected in the tunneling density of states (TDOS) when two identical two-dimensional electron systems are laterally separated by a thin energy barrier. The Coulombic pseudogap remains robust well into the quantum Hall regime until it is overshadowed by the cyclotron gap in the TDOS. The pseudogap is modified by the in-plane magnetic field, demonstrating a nontrivial effect of the in-plane magnetic field on the electron-electron interaction.

Original languageEnglish
Article number126804
JournalPhysical Review Letters
Volume96
Issue number12
DOIs
Publication statusPublished - 2006 Apr 3

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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