Abstract
The elastoresistivity tensor characterizes changes in a material's resistivity due to strain. As a fourth-rank tensor, elastoresistivity can be a uniquely useful probe of the symmetries and character of the electronic state of a solid. We present a symmetry analysis of (both in the presence and absence of a magnetic field) based on the crystalline point group, focusing for pedagogic purposes on the point group (of relevance to several materials of current interest). We also discuss the relation between and various thermodynamic susceptibilities, particularly where they are sensitive to critical fluctuations proximate to a critical point at which a point-group symmetry is spontaneously broken.
- Received 17 September 2015
DOI:https://doi.org/10.1103/PhysRevB.92.235147
©2015 American Physical Society