Abstract
We report on non-equilibrium transport measurements as a function of Fermi-energy of two-dimensional (2D) to one-dimensional (1D) resonant tunneling transistors. The investigated samples are fabricated by means of the cleaved-edge overgrowth method to provide atomically precise parallel 1D quantum wires adjacent to 2D electron reservoirs. We find a pronounced negative differential resistance, which is identified as resonant tunneling of 2D electrons through the ground state of the (coupled) quantum wire(s). Further signatures are related to the first-excited (coupled) quantum wire(s) state. The data are qualitatively consistent with a proposed model, which considers the specific structure of the given samples and low-dimensional tunneling with energy and momentum conservation.
| Original language | English |
|---|---|
| Pages (from-to) | 292-295 |
| Number of pages | 4 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 22 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Apr 2004 |
| Event | 15th International Conference on ELectronic Propreties - Nara, Japan Duration: 14 Jul 2003 → 18 Jul 2003 |
Keywords
- Cleaved-edge overgrowth
- Electronic transport
- Resonant tunneling
- Tunneling transistor
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