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arXiv 2102.08970cond-mat.stat-mech
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外场作用下晶体膜的热屈曲转变

Thermal buckling transition of crystalline membranes in a field

Pierre Le Doussal, Leo Radzihovsky

摘要:

各向同性嵌入空间中的二维结晶膜表现出具有异常弹性的平坦相,例如,for graphene石墨烯.在这里,我们研究他们的热涨落在嵌入空间中的精确旋转不变性的情况下。一个例子是由一个薄膜在取向领域,调整到一个临界屈曲点的应用程序的面内应力。通过详细的分析,我们表明,过渡是在一个新的普适类。自洽筛选方法预测的第二阶过渡,与修改后的异常弹性指数在临界状态,而RG建议弱一阶过渡。

英文摘要:

Two dimensional crystalline membranes in isotropic embedding space exhibit a flat phase with anomalous elasticity, relevant e.g., for graphene. Here we study their thermal fluctuations in the absence of exact rotational invariance in the embedding space. An example is provided by a membrane in an orientational field, tuned to a critical buckling point by application of in-plane stresses. Through a detailed analysis, we show that the transition is in a new universality class. The self-consistent screening method predicts a second order transition, with modified anomalous elasticity exponents at criticality, while the RG suggests a weakly first order transition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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