二维金属表面重构的通用密度控制
Universal Density Control of Surface Reconstruction in Two-Dimensional Metals
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中文总结 AI 辅助
该研究确定了超薄金属片表面重构的统一厚度判据，发现减薄对不同贵金属片的表面重构有相反调控作用，密度泛函计算验证了相关趋势。
中文摘要 AI 辅助
我们确定了超薄金属片表面重构的统一厚度判据，该临界厚度由重构时表面原子密度的变化决定：减薄始终有利于增加该密度的结构变化。因此，减薄会抑制5d贵金属(110)片的(1×2)重构，但会促进4d贵金属(001)片的类六方重构。密度泛函计算验证了这些趋势，且仅显示表面应力和量子振荡效应带来的微小修正。
英文摘要
We identify a unified thickness criterion for surface reconstruction in ultrathin metal sheets. The critical thickness is governed by the change in surface atomic density upon reconstruction: thinning always favors structural changes that increase this density. Thus, thinning suppresses the (1x2) reconstruction of 5d noble metal (110) sheets but promotes the quasi-hexagonal reconstruction of 4d noble metal (001) sheets. Density functional calculations validate these trends and show only minor corrections from surface stress and quantum-oscillation effects.
