Fractional shot noise in partially gapped Tomonaga-Luttinger liquids

Eyal Cornfeld, Izhar Neder, Eran Sela

Research output: Contribution to journalArticlepeer-review


We depict a family of one-dimensional systems where one can create and detect fractional charges. These charges are produced via interacting one-dimensional conductors connected to noninteracting leads. At certain electron densities, some distinct modes develop an energy gap due to electron-electron interactions. This gap allows for tunneling events inside the conductor, which generate electric current noise. The resulting fractional noise's Fano factor depends only on the identification of the gapped mode, and is insensitive to additional interactions in the conductor. These effects can be realized in either quantum wires or edges of quantum Hall systems.

Original languageEnglish
Article number115427
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number11
StatePublished - 23 Mar 2015


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