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arXiv · 1609.01878

High-Temperature Series Expansion for Spin-1/2 Heisenberg Models

Andreas Hehn·Natalija van Well·Matthias Troyer
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Abstract

We present a high-temperature series expansion code for spin-1/2 Heisenberg models on arbitrary lattices. As an example we demonstrate how to use the application for an anisotropic triangular lattice with two independent couplings J1 and J2 and calculate the high-temperature series of the magnetic susceptibility and the static structure factor up to 12th and 10th order, respectively. We show how to extract effective coupling constants for the triangular Heisenberg model from experimental data on Cs2CuBr4.

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Andreas Hehn, Natalija van Well, Matthias Troyer. 2016-09-07. High-Temperature Series Expansion for Spin-1/2 Heisenberg Models. https://doi.org/10.1016/j.cpc.2016.09.003

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