Magnetic ordering in a doped frustrated spin-Peierls system

Details Magnetic ordering in a doped frustrated spin-Peierls system Magnetic ordering in a doped frustrated spin-Peierls system

2003-08-17

arxiv.org/abs/cond-mat/0308334v5

Phys. Rev. B 69, 212412 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

Published version, 4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.69.212412

Based on a model of a quasi-one dimensional spin-Peierls system doped with non-magnetic impurities, an effective two-dimensional Hamiltonian of randomly distributed S=1/2 spins interacting via long-range pair-wise interaction is studied using a stochastic series expansion quantum Monte Carlo method. The susceptibility shows Curie-like behavior at the lowest temperatures reached although the staggered magnetisation is found to be finite for $T\to 0$. The doping dependance of the corresponding three-dimensional Neel temperature is also computed.

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