Design and fabrication of ballistic constrictions for high temperature operation
| Autor: | Evelyn L. Hu, M. S. Miller, Michael J. Rooks, Gregory L. Snider, I‐Hsing Tan |
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| Rok vydání: | 1992 |
| Předmět: |
Fabrication
Materials science Condensed matter physics Computer simulation business.industry Amplifier Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Signal Ballistic conduction Optoelectronics General Materials Science Electrical and Electronic Engineering business Fermi gas Energy (signal processing) Voltage |
| Zdroj: | Superlattices and Microstructures. 11:297-301 |
| ISSN: | 0749-6036 |
| Popis: | Quantized conductance is observed in a split gate structure at temperatures up to 30K and with bias voltages of up to 12mV. This work addresses the limited temperature range and signal levels of ballistic constrictions by a comprehensive design strategy employing two dimensional self consistent Poisson-Schrodinger simulations to design a structure giving large energy subband separations. The large signal level of 700nA, made possible by a 10meV separation, allows measurements to be made without a lock-in amplifier. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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