TY - JOUR
T1 - Optical Cooling of Magnons
AU - Sharma, Sanchar
AU - Blanter, Yaroslav M.
AU - Bauer, Gerrit E.W.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
UR - http://resolver.tudelft.nl/uuid:ad016aef-9e3e-493b-a63c-021f8bba9913
UR - http://www.scopus.com/inward/record.url?scp=85052193746&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.087205
DO - 10.1103/PhysRevLett.121.087205
M3 - Article
AN - SCOPUS:85052193746
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 087205
ER -