Figure 7: Effect of interface on low-temperature Si and MgO apparent thermal conductivity. | Nature Communications

Figure 7: Effect of interface on low-temperature Si and MgO apparent thermal conductivity.

From: Anisotropic failure of Fourier theory in time-domain thermoreflectance experiments

Figure 7

Effect of spot size and transducer/interface on ΛA for Si and MgO at 48, 83 and 144 K. For comparison, we include the results of ref. 4 plotted as a function of the root mean square of the pump and probe spot sizes used in their experiment. In MgO, the interface has an effect on the value of ΛA comparable to that of w0.

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