Kavli Affiliate: Mamoru Matsuo
| First 5 Authors: Ryotaro Sano, Mamoru Matsuo, , ,
| Summary:
Recent experiments have shown an indication of a hydrodynamic magnon behavior
in ultrapure ferromagnetic insulators; however, its direct observation is still
lacking. Here, we derive a set of coupled hydrodynamic equations and study the
thermal and spin conductivities for such a magnon fluid. We reveal the drastic
breakdown of the magnonic Wiedemann-Franz law as a hallmark of the
hydrodynamics regime, which will become key evidence for the experimental
realization of an emergent hydrodynamic magnon behavior. Therefore, our results
pave the way towards the direct observation of magnon fluids.
| Search Query: ArXiv Query: search_query=au:”Mamoru Matsuo”&id_list=&start=0&max_results=10