Fractional charge and correlation exponents for interacting electrons in one dimension

Eugene B. Kolomeisky, Joseph P. Straley

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Close to the transition between incommensurate conductor and commensurate insulator, charge transport in a system of one-dimensional interacting spin-1/2 fermions moving in a periodic potential is done by solitons (i.e., the few extra particles or holes) having a charge Q which is a fraction of the elementary charge e. We show that Q is directly related to the limiting value at commensuration of the exponent gc* of the charge-charge correlation function: gc*=(Q/e)2. We give some simple rules for determining both charge and spin correlation exponents and point out their dependence on the parity of the order of the underlying umklapp scattering.

Original languageEnglish
Pages (from-to)4891-4894
Number of pages4
JournalPhysical Review Letters
Issue number24
StatePublished - 1995

ASJC Scopus subject areas

  • General Physics and Astronomy


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