Accession Number : AD0744524

Title :   Experimental and Theoretical Physics.

Descriptive Note : Final rept. 31 May 69-12 May 72,

Corporate Author : IBM WATSON RESEARCH CENTER YORKTOWN HEIGHTS N Y

Personal Author(s) : Esaki,L.

Report Date : 12 MAY 1972

Pagination or Media Count : 8

Abstract : The report presents the results of a man-made superlattice: a one-dimensional long-period superlattice in monocrystalline semiconductors with an advanced epitaxy technology. This project was primarily aimed at achieving an electronic superlattice, although the technology, once established, can be applied to form other kinds of superlattices. Theoretical analysis for an electronic superlattice has predicted that a quantum mechanical effect, associated with the periodic potential, gives rise to intriguing nonlinearities in transport and optical properties such as a negative differential conductivity, higher harmonic generation, etc. With a nearly ideal superlattice structure, it may be possible to build an oscillator or an amplifier being operated up to 1 tera Hz (sub mm wave), far beyond the frequency range of the existent solid state devices. Thus, one can view this project to be directed toward exploring future generation semiconductor devices and technologies. (Author

Descriptors :   (*SEMICONDUCTING FILMS, SCIENTIFIC RESEARCH), OPTICAL PROPERTIES, TRANSPORT PROPERTIES, GALLIUM ARSENIDES, EPITAXIAL GROWTH, RAMAN SPECTROSCOPY, PHOSPHIDES

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE