## Abstract

We study the metal-insulator transition accompanied with a charge ordering in the one-dimensional (Formula presented)-(Formula presented) model at quarter filling by the density-matrix renormalization-group method. In this model the nearest-neighbor hopping energy (Formula presented) competes with the next-nearest-neighbor exchange energy (Formula presented). We have found that a metal-insulator transition occurs at a finite value of (Formula presented); (Formula presented) and the transition is of first order. In the insulating phase for small (Formula presented), there is an alternating charge ordering and the system behaves as a one-dimensional quantum Heisenberg antiferromagnet. The metallic side belongs to the universality class of the Tomonaga-Luttinger liquids. The quantum phase transition is an example of melting of the one-dimensional quantum Heisenberg antiferromagnet.

Original language | English |
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Pages (from-to) | 13702-13705 |

Number of pages | 4 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 57 |

Issue number | 21 |

DOIs | |

Publication status | Published - 1998 |

Externally published | Yes |

## ASJC Scopus subject areas

- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics