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28 March 2024
 
  » arxiv » cond-mat/9706086

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Exact Results for a Kondo Problem in One Dimensional t-J Model
Yupeng Wang ; Jianhui Dai ; Zhanning Hu ; Fu-Cho Pu ;
Date 11 Jun 1997
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractWe propose an integrable Kondo problem in a one-dimensional (1D) $t-J$ model. With the open boundary condition of the wave functions at the impurity sites, the model can be exactly solved via Bethe ansatz for a class of $J_{R,L}$ (Kondo coupling constants) and $V_{L,R}$ (impurity potentials) parametrized by a single parameter $c$. The integrable value of $J_{L,R}$ runs from negative infinity to positive infinity, which allows us to study both the ferromagnetic Kondo problem and antiferromagnetic Kondo problem in a strongly correlated electron system. Generally, there is a residual entropy for the ground state, which indicates a typical non-Fermi liquid behavior.
Source arXiv, cond-mat/9706086
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