Detection of a Jahn–Teller mode as an ultrafast fingerprint of spin-transition-induced charge transfer in CoFe Prussian Blue Analogue

• DOI: 10.1039/d3ma01072d
• Publication Date: 2024-03-05T16:40:57Z
• Authors: Marius Hervé; Bogdan Marekha; Sandra Mazerat; Talal Mallah; Marco Cammarata; Samir F. Matar; Stefan Haacke; Jérémie Léonard; Eric Collet
• Keywords: Prussian blue; Jahn–Teller effect; Blueshift

Using sub-20-fs ultrafast spectroscopy, we unravel high-frequency vibrational coherences during the photoinduced charge transfer in CoFe Prussian Blue Analogue, attributed to transient activation of a low-symmetry Jahn–Teller mode.