Particle-hole symmetric Luttinger liquids in a quantum Hall circuit

Details Particle-hole symmetric Luttinger liquids in a quantum Hall circuit Particle-hole symmetric Luttinger liquids in a quantum Hall circuit

2005-01-17

arxiv.org/abs/cond-mat/0501392v1

Phys. Rev. Lett. 95, 156804 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.156804

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 inter-edge backscattering and is shown to lead to suppressed or enhanced transmission, in marked contrast with 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.

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