Interplay between Jahn–Teller Distortions and Structural Phase Transitions in Ruddlesden–Poppers

• DOI: 10.1021/jacs.5c00459
• Publication Date: 2025-02-18T14:06:12Z
• Authors: Anna Herlihy; Wei-Tin Chen; Clemens Ritter; Yu-Chun Chuang; Mark S. Senn
• Keywords: Jahn–Teller effect

The interplay between crystallographic symmetry, structural distortions, and the tolerance factor derived from isotropic ionic radii of constituent cations anions inorganic perovskites related materials is a ubiquitous concept in solid-state chemistry. Here we demonstrate model for phase transition temperatures associated with these distortions layered by considering anisotropy cations, which are susceptible to first-order Jahn-Teller distortions. These symmetry-lowering transitions known have significant superconductivity high-TC cuprates, untangling chemistry that can effectively control them utmost relevance search similar phenomena nickelates, study has been greatly stimulated recent reports high-pressure superconductivity.