Evolution of elastic moduli through a two-dimensional structural transformation
Evolution of elastic moduli through a two-dimensional structural transformation
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通过二维结构变换弹性模量的演变
DOI:
10.1103/physrevb.99.104108
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发表时间:
2019
影响因子:
3.7
通讯作者:
Barraza-Lopez, Salvador
中科院分区:
文献类型:
--
作者:
Pacheco-Sanjuan, Alejandro;Bishop, Tyler B.;Farmer, Erin E.;Kumar, Pradeep;Barraza-Lopez, Salvador
We use a classical analytical and separable elastic energy landscape describing SnO monolayers to estimate the softening of elastic moduli through a mechanical instability occurring at finite temperature in this material. Although not strictly applicable to this material due to its low-energy barrierthat leads to a quantum paraelastic phase, the present exercise is relevant as it establishes a conceptual procedure to estimate such moduli straight from a two-dimensional elastic energy landscape. As additional support for the existence of a quantum paraelastic phase, we carry a qualitative WKB analysis to estimate escape times from an individual well on the landscape; escape times increase exponentially with the height of the barrier. We also provide arguments against an additional transformation onto a planar lattice due to its high-energy cost. These results continue to establish a case for the usefulness of soft matter concepts in two-dimensional materials, and of the potential lurking of quantum effects into soft matter.
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影响因子:
56.9
作者:
Zhang, J;Liu, J;Lieber, CM
通讯作者:
Lieber, CM
影响因子:
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作者:
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作者:
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Neaton, Jeffrey B.
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
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通讯作者:
F. Salazar
影响因子:
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作者:
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通讯作者:
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