Evidence for effective thermal boundary resistance from magnon/phonon disequilibrium

Details Evidence for effective thermal boundary resistance from magnon/phonon disequilibrium Evidence for effective thermal boundary resistance from magnon/phonon disequilibrium

2010-01-25

arxiv.org/abs/1001.4557v1

Physics

Condensed Matter

Materials Science

Scientific paper

We use the time-resolved magneto-optical Kerr effect (TRMOKE) to measure the local temperature and heat flow dynamics in ferromagnetic SrRuO3 thin films. After heating by a pump pulse, the film temperature decays exponentially, indicating that the heat flow out of the film is limited by the film/substrate interface. We show that this behavior is consistent with an effective boundary resistance resulting from disequilibrium between the spin and phonon temperatures in the film.

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