Print Email Facebook Twitter Optical Cooling of Magnons Title Optical Cooling of Magnons Author Sharma, S. (TU Delft QN/Bauer Group; Kavli institute of nanoscience Delft) Blanter, Y.M. (TU Delft QN/Blanter Group; Kavli institute of nanoscience Delft) Bauer, G.E. (TU Delft QN/Bauer Group; Kavli institute of nanoscience Delft; Tohoku University) Date 2018 Abstract Inelastic scattering of light by spin waves generates an energy flow between the light and magnetization fields, a process that can be enhanced and controlled by concentrating the light in magneto-optical resonators. Here, we model the cooling of a sphere made of a magnetic insulator, such as yttrium iron garnet, using a monochromatic laser source. When the magnon lifetimes are much larger than the optical ones, we can treat the latter as a Markovian bath for magnons. The steady-state magnons are canonically distributed with a temperature that is controlled by the light intensity. We predict that such a cooling process can significantly reduce the temperature of the magnetic order within current technology. To reference this document use: http://resolver.tudelft.nl/uuid:ad016aef-9e3e-493b-a63c-021f8bba9913 DOI https://doi.org/10.1103/PhysRevLett.121.087205 ISSN 0031-9007 Source Physical Review Letters, 121 (8) Part of collection Institutional Repository Document type journal article Rights © 2018 S. Sharma, Y.M. Blanter, G.E. Bauer Files PDF PhysRevLett.121.087205.pdf 329.85 KB Close viewer /islandora/object/uuid:ad016aef-9e3e-493b-a63c-021f8bba9913/datastream/OBJ/view