Dimensionality selection in a molecule-based magnet

TL;DR

This paper presents a chemical method to control the dimensionality of magnetic interactions in a molecule-based magnet, enabling the transition from quasi-two-dimensional to quasi-one-dimensional magnetic behavior while preserving coupling strength.

Contribution

The study introduces a novel chemical approach to selectively inhibit magnetic exchange along one crystal direction, allowing precise dimensionality tuning in molecular magnetic materials.

Findings

Achieved dimensionality switching from quasi-2D to quasi-1D

Maintained nearest-neighbour magnetic coupling strength

Demonstrated control over magnetic interaction pathways

Abstract

Gaining control of the building blocks of magnetic materials and thereby achieving particular characteristics will make possible the design and growth of bespoke magnetic devices. While progress in the synthesis of molecular materials, and especially coordination polymers, represents a significant step towards this goal, the ability to tune the magnetic interactions within a particular framework remains in its infancy. Here we demonstrate a chemical method which achieves dimensionality selection via preferential inhibition of the magnetic exchange in an $S=1/2$ antiferromagnet along one crystal direction, switching the system from being quasi-two- to quasi-one-dimensional while effectively maintaining the nearest-neighbour coupling strength.