Figure 2
From: Demonstration of electron focusing using electronic lenses in low-dimensional system
Temperature dependence of focusing signal. (a) QPC 1-3 were set to G0, the lattice temperature was incremented from 20 mK to 1.6 K. Data have been offset vertically for clarity. Inset shows a zoom-in of focusing peak at 20 mK and 1.6 K after removing a linear background. (b) Normalized peak intensity γ(T)/γ(1.6K) as a function of temperature. γ(T) was determined by subtracting a linear background within the vicinity of focusing peak. The solid blue and magenta lines show the calculated upper and lower bound of peak intensity using Eqs. (2) and (3) without adjustable parameters. Details about the calculation can be found in the main text.
