Resonant tunneling between parallel 1D quantum wires and adjoining 2D electron reservoirs
| Autor: | F. Ertl, Gerhard Abstreiter, S. F. Roth, Dieter Schuh, Martin Bichler |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Physics
Condensed matter physics Quantum wire Scanning tunneling spectroscopy Transistor Resonant-tunneling diode Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention law Ground state Quantum Quantum tunnelling |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 22:292-295 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2003.12.004 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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