Heat Transport in Nanoscale Heterosystems: A Numerical and Analytical Study

Figure 5

Comparison of the simulation result and experimental data for a 10.4?nm thin Bi-film deposited on an Si(001) substrate. The experimental data are obtained from the temporal evolution of the (01)-spot intensity that is converted to a temperature using the Debye-Waller-effect [30, 31]. An exponential fit to the experimental data yields the decay constant $t_{\text{exp}}=(1205\pm 70)$?picoseconds. Convolving the numerical result with a rectangular function of 70?picoseconds width has no influence on the time constant which is $t_{\text{sim}}=1187$?picoseconds for the 10.4?nm thin Bi-film.