Dipole-induced transition in 3 dimensions
成果类型：
Article
署名作者：
Procaccia, Itamar; Samanta, Tuhin
署名单位：
North University of China; Weizmann Institute of Science
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-13318
DOI：
10.1073/pnas.2427273122
发表日期：
2025-08-07
关键词：
摘要：
The Kosterlitz-Thouless and the Hexatic phase transitions are celebrated examples of dipole (vortex, dislocation) induced transitions in condensed matter physics. For very clear reasons, these important topological transitions are restricted to 2-dimensions. Here, we present a genuine dipole-induced transition in the 3-dimensional response of (athermal) amorphous solids to applied strain. Similarly to the existence of a hexatic phase between normal solid and fluid, we identify an intermediate phase between a phase of normal elastic response at high pressure, and fluid matter at zero pressure. The mechanical response in the intermediate phase is accompanied by plasticity that is generically associated with nonaffine quadrupolar events seen in the resulting displacement field. Gradients of the quadrupolar fields act as dipole charges that screen elasticity, breaking both translational and chiral symmetries. We highlight angular correlations that exhibit diverging correlation lengths at this transition and determine the critical scaling exponents.