Critical properties of doped coupled spin-Peierls chains

Details Critical properties of doped coupled spin-Peierls chains Critical properties of doped coupled spin-Peierls chains

2004-05-18

arxiv.org/abs/cond-mat/0405417v2

Phys. Rev. B 71, 212403 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 7 figures. Direct comparison between RSRG and SSE provided

Scientific paper

10.1103/PhysRevB.71.212403

Using numerical Real Space Renormalisation Group methods as well as Stochastic Series Expansions Quantum Monte Carlo simulations a generic model of diluted spin-1/2 impurities interacting at long distances is investigated. Such a model gives a generic description of coupled dimerized spin-Peierls chains doped with non-magnetic impurities at temperatures lower than the spin gap. A scaling regime with temperature power-law behaviors in several quantities like the uniform or staggered susceptibilities is identified and interpreted in terms of large clusters of correlated spins.

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