The Poisson ratio of crystalline surfaces
The Poisson ratio of crystalline surfaces
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晶体表面的泊松比
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
G. Thorleifsson
中科院分区：
文献类型：
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作者：
M. Falcioni;M. Bowick;E. Guitter;G. Thorleifsson
结晶（聚合）表面的一个显著的理论预测是其泊松比σ为负。利用这种表面的一个简单模型的大规模蒙特卡罗模拟，我们表明这确实是正确的。在弯曲刚度κ = 1.1的1282晶格上，我们得到σ≃- 0.32的精确数值。这与Le Doussal和Radzihovsky自洽筛选近似的预测σ =−1/3非常吻合。
A remarkable theoretical prediction for a crystalline (polymerized) surface is that its Poisson ratio σ is negative. Using a large-scale Monte Carlo simulation of a simple model of such surfaces we show that this is indeed true. The precise numerical value we find is σ ≃ − 0.32 on a 1282 lattice at bending rigidity κ = 1.1. This is in excellent agreement with the prediction σ = − 1/3 following from the self-consistent screening approximation of Le Doussal and Radzihovsky.