Frustration, connectivity, and the glass transition |
| |
Authors: | Sharon C Glotzer and Antonio Coniglio |
| |
Affiliation: | a Center for Theoretical and Computational Materials Science, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA b Dipartimento di Scienze Fisiche, Universita di Napoli, INFN and INFM Sezione di Napoli, Mostra D'Oltramare, Pad. 19, Napoli 80125, Italy |
| |
Abstract: | The concepts of connectivity, localization, and frustration are explored in relation to glass formation in amorphous materials. First, the concept of eigenclusters to geometrically characterize correlations in amorphous materials is introduced, and discussed in detail for both the Ising ferromagnet and Ising spin glass models. Second, a new, glass-forming percolation model that contains frustration as the essential ingredient, and exhibits two percolation transitions, is discussed. This new model gives new insights into frustrated systems, and applications to the Ising spin glass model and other glass-forming systems are discussed. In particular, we propose the possibility that the occurrence of a percolation-type transition at temperatures above the glass transition temperature may be a general feature of glass-forming systems. The important role of computer simulations in probing the mechanism of glass formation is emphasized. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|