从Maxwell刚性的观点认识非晶相变材料
Understanding amorphous phase-change materials from the viewpoint of Maxwell rigidity
摘要：
相变材料（PCM）是相当感兴趣的主题，因为它们已经被认为是下一代非易失性存储器设备（称为相变随机存取存储器（PRAM））的潜在有源层。通过分析第一性原理分子动力学模拟，我们开发了一种新的方法枚举的机械约束在非晶相，并表明，最流行的系统（锗锑碲）的相图可以分为两个组成区域具有明确的机械特性：一个富碲的灵活的阶段，和一个强调刚性相，包括已知的PCM。这种声音原子尺度的洞察力应该打开新的途径，从刚性的角度来理解相变材料和其他复杂的无定形材料。
英文摘要：
Phase-change materials (PCMs) are the subject of considerable interest because they have been recognized as potential active layers for next-generation non-volatile memory devices, known as Phase Change Random Access Memories (PRAMs). By analyzing First Principles Molecular Dynamics simulations we develop a new method for the enumeration of mechanical constraints in the amorphous phase and show that the phase diagram of the most popular system (Ge-Sb-Te) can be split into two compositional regions having a well-defined mechanical character: a Tellurium rich flexible phase, and a stressed rigid phase that encompasses the known PCMs. This sound atomic scale insight should open new avenues for the understanding of PCMs and other complex amorphous materials from the viewpoint of rigidity.
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。
