Nanoscale magnetism probed in a matter-wave interferometer

Yaakov Y. Fein, Sebastian Pedalino, Armin Shayeghi, Filip Kiałka, Stefan Gerlich, Markus Arndt

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 Stern-Gerlach technique enables us to study 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 C60 beam consistent with high-temperature atom-like deflection of rotational magnetic moments.

Quantum Optics, Quantum Nanophysics and Quantum Information
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Austrian Fields of Science 2012
103025 Quantum mechanics
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