Magnetic ordering in a doped frustrated spin-Peierls system

Abstract

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.

arXiv commentPublished version, 4 pages, 5 figures

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Cited by in corpus (12)

• Supplementary material for "Impurity-induced magnetic order in low dimensional spin gapped materials"
• Random-Singlet Phase in Disordered Two-Dimensional Quantum Magnets
• Crossover effects in the random exchange spin-1/2 antiferromagnetic chain
• Field-induced quantum disordered phases in S=1/2 weakly-coupled dimer systems with site dilution
• Magnetic responses of randomly depleted spin ladders
• Magnetic Bose glass phases of coupled antiferromagnetic dimers with site dilution
• Competing Bose-Glass physics with disorder-induced Bose-Einstein condensation in the doped $S=1$ antiferromagnet Ni(Cl${}_{1-x}$Br${}_x$)${}_2$-4SC(NH${}_2$)${}_2$ at high magnetic fields
• The disordered-free-moment phase: a low-field disordered state in spin-gap antiferromagnets with site dilution
• Critical properties of doped coupled spin-Peierls chains
• Defect-induced spin-glass magnetism in incommensurate spin-gap magnets
• Impurities near an Antiferromagnetic-Singlet Quantum Critical Point
• Confinement and critical regime in doped frustrated quasi-one dimensional magnets