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

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

1997-02-25

arxiv.org/abs/cond-mat/9702215v1

Physics

Condensed Matter

4 pages and 3 figures

Scientific paper

10.1103/PhysRevLett.79.147

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 support strongly the conjecture drawn from the approximative real-space renormalization group treatment. A statistical analysis scheme is developed which will be useful for the search scaling behavior in numerical and experimental data of random spin chains.

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