Measuring the squared magnetisation of a molecule

TL;DR

The paper proposes a method to measure the squared magnetization of a molecule by passing it through a mesoscopic pipe and analyzing momentum changes to infer its spin state.

Contribution

It introduces a novel experimental setup using a mesoscopic pipe and spin projection to measure molecular magnetization.

Findings

Momentum detection indicates the molecule's spin state.

The method distinguishes between zero and non-zero squared total spin.

Potential for non-invasive magnetic measurements at the molecular level.

Abstract

It is proposed to shoot a molecule through a pipe of mesoscopic scale. The molecule should effectifely carry two spins and antiferromagnetic chains should be embedded in the wall of the tube. If the momentum is detected before and behind the tube, a projection of the molecular spins s1 and s2 takes place. If the molecule did not loose momentum inside the tube, it has a vanishing squared total spin in the direction of its anisotropy axis L. Whereas [L(s1+s2)]^2=1 if it did so.