Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-05-18
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.
Laflorencie Nicolas
Poilblanc Didier
Sigrist Manfred
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