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On Quantum Solitons in the Sawtooth Lattice

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arxiv cond-mat/9508121 v1 pith:T4KUVRL3 submitted 1995-08-26 cond-mat

classification cond-mat
keywords latticerailroadsawtoothsystemtrestleantikinkboundarycase
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abstract

We study the sawtooth lattice of a coupled spin $1/2$ Heisenberg system, a variant of the railroad trestle lattice. The ground state of this system is two-fold degenerate with periodic boundary conditions and supports kink antikink excitations, which are distinct in this case, unlike the railroad trestle lattice. The resulting low temperature thermodynamics is compared with the recently discovered Delafossites $Y Cu O_{2.5} ~$.

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  1. Effects of the Hubbard interaction on the quantum metric

    cond-mat.str-el 2024-12 conditional novelty 6.0 of 10

    On a fermionic Creutz ladder, the dressed quantum metric matches exact diagonalization results better than the generalized quantum metric, and Hubbard interactions suppress the quantum metric.

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