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

Beat Frischmuth·Manfred Sigrist
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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 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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Beat Frischmuth, Manfred Sigrist. 1997-02-25. Low-Temperature Scaling Regime of Random Ferromagnetic-Antiferromagnetic Spin Chains. https://doi.org/10.1103/physrevlett.79.147

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