Brillouin Light Scattering Spectra as local Temperature Sensors for Thermal Magnons and Acoustic Phonons
arXiv:1212.1520 · doi:10.1063/1.4793538
Abstract
We demonstrate the use of the micro-Brillouin light scattering (micro-BLS) technique as a local temperature sensor for magnons in a Permalloy thin film and phonons in the glass substrate. A systematic shift in the frequencies of two thermally excited perpendicular standing spin wave modes as the film is uniformly heated allows us to achieve a temperature resolution better than 2.5 K. We demonstrate that the micro-BLS spectra can be used to measure the local temperatures of phonons and magnons across a thermal gradient. Such local temperature sensors are useful for investigating spin caloritronic and thermal transport phenomena in general.
15 pages, 5 figures
References in corpus (3)
Cited by in corpus (10)
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