2003/02/03 by Hiroki Tsuchiura, Tsuchiura, Hiroki, Masao Ogata +5
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced Physical and Chemical Molecular Interactions #Surface and Thin Film Phenomena #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0302031
4 pages, 3 figures
arxiv created 2003/02/03 · arxiv updated 2009/11/30
Electron densities at the edge site in one-dimensional Hubbard model and t-J model are studied by using the Bethe ansatz solutions and exact diagonalization method. It is found that the boundary is electron-attractive, or equivalently hole-repulsive, near half-filling. We propose a new criterion to determine whether the carriers in a strongly correlated system are electron-like or hole-like depending on the electronic behavior at the boundary.