Abstract
It is shown, for a small hole doping relative to half filling, that the large-U limit of the Hubbard model (or J=0 limit of the t-J model) exhibits an all-electron Peierls instability towards a state with a charge-density wave. The resulting gap in the spinon spectrum renders the model an insulator.
- Received 22 January 1990
DOI:https://doi.org/10.1103/PhysRevB.41.11701
©1990 American Physical Society