"First Detection of Quantum-Triggered Magnetic Avalanche: Barkhausen Noise"
Originally Published 1 year ago — by Phys.org
Caltech researchers have detected "Barkhausen noise" for the first time through quantum mechanical effects, representing an advance in fundamental physics. By studying a pink crystalline material called lithium holmium yttrium fluoride cooled to near absolute zero, the team observed that quantum tunneling and co-tunneling effects can lead to macroscopic changes in the magnetic orientations of electron spins, causing a magnetic avalanche. This discovery could have potential applications in creating quantum sensors and other electronic devices.