半隐式Lax-Wendroff动能方案用于电子-声子耦合
Semi-implicit Lax-Wendroff kinetic scheme for electron-phonon coupling
AI总结：
本文提出一种半隐式Lax-Wendroff方案，用于高效模拟电子-声子耦合及热传导过程，提升微电子器件热管理能力。
摘要：
本文开发了一种半隐式Lax-Wendroff方案，用于金属中电子-声子耦合过程，基于双温动能方程。该方法的核心是将物理方程的演化信息整合到数值建模过程中，从而使得时间步长或单元尺寸不再受限于弛豫时间和平均自由程。具体而言，在重构界面分布函数时，使用有限差分法再次求解动能模型，通过这种方式将粒子迁移、散射和电子-声子耦合过程在单个时间步内耦合在一起。数值测试表明，该方法能够高效地捕捉从弹性和扩散区域的电子-声子耦合或热传导过程。它为描述微电子器件中的电子-声子耦合或热管理提供了新的工具。
英文摘要：
A semi-implicit Lax-Wendroff scheme is developed for electron-phonon coupling process in metals based on the two-temperature kinetic equations. The core of this method is to integrate the evolution information of physical equations into the numerical modeling process, which leads to that the time step or cell size is not limited by the relaxation time and mean free path. Specifically, the finite difference method is used to solve the kinetic model again when reconstructing the interfacial distribution function, through which the particle migration, scattering and electron-phonon coupling processes are coupled together within a single time step. Numerical tests demonstrate that this method could efficiently capture electron-phonon coupling or heat conduction processes from the ballistic to diffusive regimes. It provides a new tool for describing electron-phonon coupling or thermal management in microelectronic devices.
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。
