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arXiv:cond-mat/9702215 · Physical Review Letters

Low-Temperature Scaling Regime of Random Ferromagnetic-Antiferromagnetic Spin Chains

Beat Frischmuth, Manfred Sigrist

Published Jul 7, 1997• 17 citations
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Abstract

Using the continuous time quantum Monte Carlo loop algorithm, we calculate the temperature dependence of the uniform susceptibility, and the specific heat of a spin-1/2 chain with random antiferromagnetic and ferromagnetic couplings, down to very low temperatures. Our data show a consistent scaling behavior in both quantities and strongly support the conjecture drawn from the approximative real-space renormalization group treatment. A statistical analysis scheme is developed which will be useful for the search of scaling behavior in numerical and experimental data of random spin chains.

DOI
10.1103/physrevlett.79.147

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