Theoretical Studies of Dimeric Exchange-Coupled Single-Molecule Magnets

TL;DR

This paper presents a theoretical analysis of a molecular dimer model incorporating higher order and antisymmetric interactions, exploring quantum phenomena like energy oscillations, magnetization, and magnetocaloric effects.

Contribution

It introduces a comprehensive theoretical framework for dimeric exchange-coupled single-molecule magnets considering complex interactions, revealing their impact on quantum properties.

Findings

Interactions influence ground state energy oscillations

Magnetization steps are affected by higher order terms

Magnetocaloric effects show exotic behavior

Abstract

We study a molecular dimer model that takes higher order interaction term as well as antisymmetric term into account. We mainly focus on the theoretical quantum properties that are of interest. We numerically diagonalize the system and investigate different phenomena which include oscillations of ground state energy splitting, magnetization steps, Schottky anomaly, torque oscillations, and magnetocaloric effects. Indeed, we show that these interactions can exotically influence these phenomena, which should be of interest.