Particle-hole symmetric luttinger liquids in a quantum hall circuit

Stefano Roddaro, Vittorio Pellegrini, Fabio Beltram, Loren N. Pfeiffer, Ken W. West

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

We report current transmission data through a split-gate constriction fabricated onto a two-dimensional electron system in the integer quantum Hall (QH) regime. Split-gate biasing drives interedge backscattering and is shown to lead to suppressed or enhanced transmission, in marked contrast to the expected linear Fermi-liquid behavior. This evolution is described in terms of particle-hole symmetry and allows us to conclude that an unexpected class of gate-controlled particle-hole-symmetric chiral Luttinger liquids (CLLs) can exist at the edges of our QH circuit. These results highlight the role of particle-hole symmetry on the properties of CLL edge states.

Original languageEnglish (US)
Article number156804
JournalPhysical review letters
Volume95
Issue number15
DOIs
StatePublished - Oct 7 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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