Precursors to Exciton Condensation in Quantum Hall Bilayers

J. P. Eisenstein, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

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Tunneling spectroscopy reveals evidence for interlayer electron-hole correlations in quantum Hall bilayer two-dimensional electron systems at layer separations near, but above, the transition to the incompressible exciton condensate at total Landau level filling νT=1. These correlations are manifested by a nonlinear suppression of the Coulomb pseudogap which inhibits low energy interlayer tunneling in weakly coupled bilayers. The pseudogap suppression is strongest at νT=1 and grows rapidly as the critical layer separation for exciton condensation is approached from above.

Original languageEnglish (US)
Article number066802
JournalPhysical review letters
Issue number6
StatePublished - Aug 8 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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