Showing papers on "Nanoelectronics published in 1989"

Nanoelectronics: Fanciful physics or real devices?

Abstract: Remarkable advances in microfabrication technology have allowed physicists to probe into the size regime where quantum mechanical effects begin to dominate transport. When 1D conducting wires made from two‐dimensional electron gases (2DEGs) approach the same size as the deBroglie wavelength of electrons, electronic transport is determined by transmission through a small number of ‘‘waveguide modes’’ of the 1D channel. Low temperature experiments in this size regime show significant wavefunction interference effects. A number of devices based upon these physical phenomena have been proposed. Quantum localization has also been explored in perpendicular electronic transport through heteroepitaxial structures, the simplest case being one‐dimensional resonant tunneling structures that exhibit strong quantum interference up to room temperature. Three‐terminal devices that directly modulate this interference have been demonstrated. Ultimate scaling limitations of heterojunction tunneling devices will only be con...