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Quantum Monte Carlo Simulation of the Trellis Lattice Heisenberg Model for SrCu$_2$O$_3$ and CaV$_2$O$_5$

Shin Miyahara·Matthias Troyer·David C. Johnston·Kazuo Ueda
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Abstract

We study the spin-1/2 trellis lattice Heisenberg model, a coupled spin ladder system, both by perturbation around the dimer limit and by quantum Monte Carlo simulations. We discuss the influence of the inter-ladder coupling on the spin gap and the dispersion, and present results for the temperature dependence of the uniform susceptibility. The latter was found to be parameterized well by a mean-field type scaling ansatz. Finally we discuss fits of experimental measurements on SrCu$_2$O$_3$ and CaV$_2$O$_5$ to our results.

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Shin Miyahara, Matthias Troyer, David C. Johnston, Kazuo Ueda. 1998-07-09. Quantum Monte Carlo Simulation of the Trellis Lattice Heisenberg Model for SrCu$_2$O$_3$ and CaV$_2$O$_5$. https://doi.org/10.1143/jpsj.67.3918

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