Ultrafast optical probe of coherent acoustic phonons in ![]() |
(color online) Typical time-resolved reflectivity responses and their best fits (red solid line) for Co2MnAl films with different thickness: (a) 60 nm; (b) 100 nm. The insets in panels (a) and (b) show the fast Fourier transform (FFT) of the oscillation, respectively. |
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