Physics and Chemistry of Nanostructured Materials

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Figure 9. (a) Envelopes of the measured Kerr rotation at

B=2T in the sample of Fig. 8 taken with 1011

electrons cm−2/pulse. The resonant excitation

energy decreases from 2.70eV to 2.61eV as the

temperature varies from 5.7K to 270K. Amplitude

changes have been normalized at zero delay, (b)

5Room temperature Kerr rotation at 2T at

Eex=2.60eV and 1011

electrons cm−2/pulse. (c)

Room temperature Kerr rotation at IT with

5×1011electrons cm−2/pulse. The excitation is at

Eex=2.72eV, 20 meV above the ZnSe bandgap

energy.