Work

Optically induced microwave emission from antiferromagnetically coupled heterometallic complexes

Year: 2026

Type: article

Abstract: We investigated the light-induced behavior of different Cr-based antiferromagnetically coupled heterometallic systems. Time-resolved electron paramagnetic resonance (trEPR) spectroscopy experiments using nanosecond-long laser excitation in the visible range allow for the observation of an intense, long-lived emissive trEPR signal, followed by a weak, absorptive signal persisting for hundreds of milliseconds. Wavelength dependence of the polarization inversion is investigated. We employ a theoretical model to rationalize the experimental observations and discuss the potential mechanism, in which the permanent exchange interaction and selective relaxation pathways driven by the modulation of the Cr crystal field play a fundamental role.

Source: Chem

DOI: 10.1016/j.chempr.2026.103256

Authors: Susanna Ciuti, Selena J. Lockyer, Arianna Cantarella, D.K. Andrea Phan Huu, Alessandro Chiesa, Grigore A. Timco, Mor Tsfania, George F.S. Whitehead, Derren J. Heyes, Adam Brookfield, Ciarán J. Rogers, Fabio Santanni, Roberta Sessoli, Eric J.L. McInnes, Stefano Carretta, Richard E.P. Winpenny, Alice M. Bowen

Institutions: University of Manchester, University of Parma, Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Parma, National Interuniversity Consortium of Materials Science and Technology, University of Florence

Language: English

Topic: Magnetism in coordination complexes

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $9,350

Funders: Royal Society, Royal Society of Chemistry, University of Manchester, HORIZON EUROPE Framework Programme, Engineering and Physical Sciences Research Council

Awards: Magnetic Properties Measurement System for Manchester and National EPR Facility, EPR NRF Core Equipment Bid, Capital Award for Core Equipment 2022/23, National Research Facility for Electron Paramagnetic Resonance Spectroscopy, Light switchable molecular qugates, A National Research Facility for EPR Spectroscopy, 2022-2027, G9000364557

OpenAlex ID: W7204014820

FWCI:

Cites: 53

Cited by:

Related to: 10