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28 March 2024
 
  » arxiv » cond-mat/9401070

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Strong-Coupling Behavior of Two $t-J$ Chains with Interchain Single Electron Hopping
G. M. Zhang ; S. Feng ; L. Yu ;
Date 29 Dec 1993
Subject cond-mat
AbstractUsing the fermion-spin transformation to implement spin-charge separation of constrained electrons, a model of two $t-J$ chains with interchain single-electron hopping is studied by abelian bosonization. After spin-charge decoupling the charge dynamics can be trivially solved, while the spin dynamics is determined by a strong-coupling fixed point where the correlation functions can be calculated explicitly. This is a generalization of the Luther-Emery line for two-coupled $t-J$ chains. The interchain single-electron hopping changes the asymptotic behavior of the interchain spin-spin correlation functions and the electron Green function, but their exponents are independent of the coupling strength.
Source arXiv, cond-mat/9401070
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