Abstract
We introduce an electrostatic lens for ballistic electrons in two-dimensional (2D) systems and demonstrate its focusing action in very high mobility GaAs-(AlGa)As heterostructures. This is the first refractive element for the control of 2D electrons. It exemplifies the close analogy between ballistic propagation in 2D electron systems and traditional geometrical optics.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1290-1292 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 56 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1990 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)