Demonstrating Multi-bit Magnetic Memory in the Fe8 High Spin Molecule by Muon Spin Rotation

摘要

We developed a method to detect the quantum nature of high spin moleculesusing muon spin rotation, and a three-step field cycle ending always with thesame field. We use this method to demonstrate that the Fe8 molecule canremember 6 (possibly 8) different histories (bits). A wide range of fields canbe used to write a particular bit, and the information is stored in discretestates. Therefore, Fe8 can be used as a model compound for Multi-bit MagneticMemory. Our experiment also paves the way for magnetic quantum tunnelingdetection in films.