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

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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 (US)
Article number126804
JournalPhysical review letters
Issue number12
StatePublished - 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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