## Abstract

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 language | English |
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Pages (from-to) | 4891-4894 |

Number of pages | 4 |

Journal | Physical Review Letters |

Volume | 74 |

Issue number | 24 |

DOIs | |

State | Published - 1995 |

## ASJC Scopus subject areas

- Physics and Astronomy (all)