Electron-phonon interactions in energetic displacement cascades.
Electron-phonon interactions in energetic displacement cascades.
复制标题
高能位移级联中的电子-声子相互作用。
DOI：
10.1103/physrevb.38.7118
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Averback
中科院分区：
文献类型：
--
作者：
Flynn;Averback
通过考虑电子在局部热峰中的扩散，评估了电子-声子相互作用在金属中能量位移级联中的作用。发现该区域的电子系统在长时间内总是与晶格脱离平衡，而在短时间内是否达到电子平衡严重依赖于描述电子-声子相互作用的参数。忽略电子-声子耦合导致了对许多金属中热峰值温度的过高估计。
The role of electron-phonon interactions in energetic displacement cascades in metals is evaluated by considering the diffusion of electrons in a localized heat spike. It is found that the electronic system in this region always falls out of equilibrium with the lattice at long times and that whether electronic equilibrium is achieved at short times depends catastrophically on the parameters that describe the electron-phonon interaction. Neglect of the electron-phonon coupling leads to overestimates of thermal spike temperatures in many metals.