The subtle variation of metallic bonding, induced by external influence, plays an essential role in determining physical, mechanical, and chemical properties of metals. However, it is extremely difficult to describe this variation because of the delocalization nature of metallic bonding. Here, we utilize the reduced density gradient and topological analysis of electron density to capture the local metallic bonding variations (LMBV) caused by lattice distortion and carrier injection in many face-centered cubic (fcc) metals. We find that the LMBV determines the traits of fcc metals such as strength, malleability, and ductility. Moreover, the fcc metals can become more flexible/stronger with the electron/hole injection, providing an important guidance to tune metals for desired mechanical properties.

中文翻译：

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表征由外部扰动引起的局部金属键变化。

由外部影响引起的金属键合的细微变化在确定金属的物理，机械和化学性质方面起着至关重要的作用。但是，由于金属键的离域特性，很难描述这种变化。在这里，我们利用降低的密度梯度和电子密度的拓扑分析来捕获由晶格畸变和载流子注入导致的许多面心立方（fcc）金属中的局部金属键合变化（LMBV）。我们发现，LMBV决定了fcc金属的特性，例如强度，延展性和延展性。此外，通过电子/空穴注入，fcc金属可以变得更加柔韧性/更坚硬，为调整金属以获得所需的机械性能提供了重要指导。