Accession Number : ADA313873

Title :   Non-Invasive Characterization of Electronic Microstructures.

Descriptive Note : Final rept. 1 Apr 93-31 Mar 96,

Corporate Author : CINCINNATI UNIV OH DEPT OF PHYSICS

Personal Author(s) : Serota, Rostislav

PDF Url : ADA313873

Report Date : 05 JUN 1996

Pagination or Media Count : 3

Abstract : Non-invasive characterization of mesoscopic devices is addressed with the emphasis on magnetic response. Various systems - zero-dimensional quantum dots, metal grains, billiard structures, bulk metals, etc. - are studied at low temperatures. Quantum level statistics in the magnetic field, orbital and spin magnetic susceptibilities, the inhomogeneous broadening of the Knight shift are analyzed. Major predictions are: very large inhomogeneous broadening of the Knight shift due to new orbital and spin mechanisms; strongly non-linear and large magnetic susceptibility of quantum dots and its dependence on electron-electron interactions; temperature dependence of the magnetic susceptibility of systems with fixed electron number. A new paradigm, wherein classically irregular devices are mapped to disordered electronic devices, is developed.

Descriptors :   *QUANTUM ELECTRONICS, *ELECTROMAGNETIC SUSCEPTIBILITY, MAGNETIC FIELDS, MICROSTRUCTURE, ELECTRON DENSITY, ELECTRON SPIN RESONANCE, MICROELECTRONICS, SYSTEMS ANALYSIS, PERMEABILITY(MAGNETIC), MAGNETIC SIGNATURES, QUANTUM STATISTICS.

Subject Categories : Electricity and Magnetism
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE