Nanoscale Magnetism Probed in a Matter-Wave Interferometer

We explore a wide range of fundamental magnetic phenomena by measuring the dephasing of matter-wave interference fringes upon application of a variable magnetic gradient. The versatility of our interferometric Stem-Gerlach technique enables us to study the magnetic properties of alkali atoms, organic radicals, and fullerenes in the same device, with magnetic moments ranging from a Bohr magneton to less than a nuclear magneton. We find evidence for magnetization of a supersonic beam of organic radicals and, most notably, observe a strong magnetic response of a thermal C-60 beam consistent with high-temperature atomlike deflection of rotational magnetic moments.

Automated summary

In this study, we investigate various fundamental magnetic phenomena by measuring the dephasing of matter-wave interference fringes. The versatile interferometric Stem-Gerlach technique allows us to study the magnetic properties of different substances in the same device. Our findings provide evidence for magnetization of organic radicals and demonstrate a strong magnetic response of thermal C-60 beams, indicating high-temperature atomlike deflection of rotational magnetic moments.