Improved Threshold for Particle-Induced Magnetic Avalanche in Single-Molecule Magnets Using Fe$_8$ Molecule
Year: 2026
Type: preprint
Abstract: Extending the original work on the development of a magnetic avalanche detector using Mn$_{12}$-ac single-molecule magnet (SMM), we report the results on a significantly lower threshold magnetic avalanche detector using Fe$_8$ SMM. Fe$_8$ has an order of magnitude smaller relaxation time that is expected to produce at least 3 orders of magnitude lower avalanche threshold compared to Mn$_{12}$-ac. We confirm this experimentally through the detection of gamma particles with energy at least two orders of magnitude lower than the original Mn$_{12}$-ac detection demonstrated using alpha particles, limited by the experimentally available radiation source. The true threshold of avalanche may be significantly lower and will be explored with lower energy x-rays and potentially infrared photons.
Source: arXiv (Cornell University)
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: Digging deeper into effective field theory, COSI衛星で拓くMeVガンマ線宇宙観測と素粒子物理学, G4553473049, G498139845, Theoretical Physics of Fundamental and Cosmological Interactions, G5616713406, Effective field theory for sub-MeV dark matter direct detection, Breaking Effective Field Theory to Address Naturalness Problems, G585908603, G6353557677, G6511959651, G698161944, G716412294, MAGNETIC AVALANCHE DETECTOR USING SINGLE-MOLECULE MAGNETS FOR DARK MATTER AND NEUTRINO DETECTION, G8436067769, G86560745, Quantum dark matter detection through the intersection of particle physics, chemistry and solid state physics, MeV Gamma-ray Particle/Atmic/Astro Physics, G969889393
OpenAlex ID: W7206199817