Research Article

Laser-Combined Scanning Tunneling Microscopy on the Carrier Dynamics in Low-Temperature-Grown GaAs/AlGaAs/GaAs

Figure 6

(a) Line profiles of Δ 𝐼 at different 𝑡 𝑑 with the tip scanned across the AlGaAs/LT-GaAs interface. Each profile is offset by 0.5 pA steps for clarity. (b) Time evolution of in-plane band diagram near the interface: (i) before excitation and (ii) immediately after excitation. 𝑉 𝑠 = 5 . 5 V , 𝐼 = 4 5 p A .
510186.fig.006a
(a)
510186.fig.006b
(b)