Phys.org August 23, 2018
An international team of researchers (USA – Rice University, Argonne National Laboratory, Japan, China, Germany) demonstrated that cooperative enhancement of the coupling strength occurs in a magnetic solid in the form of matter-matter interaction. Specifically, the exchange interaction of N paramagnetic erbium(III) (Er3+) spins with an iron(III) (Fe3+) magnon field in erbium orthoferrite (ErFeO3) exhibits a vacuum Rabi splitting whose magnitude is proportional to N. Their results provide a route for understanding, controlling, and predicting novel phases of condensed matter using concepts and tools available in quantum optics. The discovery could help advance the understanding of spintronics and quantum magnetism, quantum computing and faster information processing with lower power consumption…read more. TECHNICAL ARTICLEÂ
The iron spins were excited to form a wave-like object called a spin wave; the erbium spins precessing in a magnetic field (B) behaved like two-level atoms. Credit: Xinwei Li