Full figure (28 kB)Fig. 1. Fabrication processes and AFM images for Si/SiO2 DB structures with different Si potential well roughnesses. First citation in article
Full figure (23 kB)Fig. 2. Typical IV curves at 15 K for (a) sample A, (b) sample B, and (c) sample C. Dashed line in (c) shows the simulated IV curve. First citation in article
Full figure (5 kB)Fig. 3. Circuit model used in the simulation to explain the IV curve for sample C. First citation in article