Inducing torque on molecular magnets via Laguerre Gaussian beams

• Published in: Laser physics letters Vol. 21; no. 5; pp. 55204 - 55211
• Main Authors: Lei, Gang, Li, Shanzhi
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.05.2024
• Subjects: light induced torque; optical vortices; single-molecule magnets
• ISSN: 1612-2011; 1612-202X
• DOI: 10.1088/1612-202X/ad3623

Abstract This theoretical study delves into the induction of torque by light beams carrying orbital angular momentum on single-molecule magnets (SMMs). The investigation explores the impact of decay rates, detunings, and control field intensities on the generation of light-induced torque and the resulting current flow in a ring formation. The results highlight the crucial role of the control field, showcasing its efficacy as a tool to manipulate and amplify torque at different frequencies. Detuning is identified as a critical parameter influencing the shift, slope, and emergence of multiple peaks in the torque profile. The interplay between detuning, control field intensity, and decay rates introduces a control mechanism for fine-tuning torque at distinct probe frequencies. These findings underscore the potential applications of the control field and detuning as robust tools for tailored manipulation of torque in SMMs, paving the way for advancements in controlled current flow dynamics with ring structures.