Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Understanding amorphous phase-change materials from the viewpoint of
  Maxwell rigidity   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.

30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom