Download or read book Electronic Structure of Microclusters and Defect Complexes written by and published by . This book was released on 1992 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was made of the electronic and structural properties of atomic clusters and defects in metals. Five main areas were considered: (1) magnetism of clusters, low dimensional systems and transition metal superlattices, (2) interaction of hydrogen with metals and hydrogen absorption around metal ions, (3) defects and defect complexes, (4) electronic structure of LiMgH3 class of compounds and (5) super-shell structure in clusters. The final report provides an outline of the accomplishments in each of these areas as well as the professional accomplishments.

Download or read book Electronic Structure and Properties of Defect Complexes in Metals written by Purusottam Jena and published by . This book was released on 1988 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work has been confined to three different areas. These include: (i) Defect complexes - Interaction of hydrogen with vacancies, substitutional impurities, impurity-vacancy complexes, and lattice strain. Also studied are the interaction of He with metals, electric field gradient produced by impurities at host sites in cubic metals, positron annihilation in clean voids, as well as those containing rare-gas atoms and impurities, and the effect of lattice relaxation on the positron lifetime. (ii) Disordered Systems - Electronic states, magnetic behavior and the electrical transport in metal-metalloid glasses; role of metalloids in affecting the electronic spectrum; (iii) Clusters - Equilibrium geometries, stability, electronic structure, and properties of neutral and charged micro-clusters consisting of up to ten atoms. Keywords: Electronic structure, Defect complexes, Metals, Disordered systems, Clusters. (MJM).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research in Progress written by and published by . This book was released on 1991 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electronic Structure of Metal Semiconductor Contacts written by Winfried Mönch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interface and surface science have been important in the development of semicon ductor physics right from the beginning on. Modern device concepts are not only based on p-n junctions, which are interfaces between regions containing different types of dopants, but take advantage of the electronic properties of semiconductor insulator interfaces, heterojunctions between distinct semiconductors, and metal semiconductor contacts. The latter ones stood almost at the very beginning of semi conductor physics at the end of the last century. The rectifying properties of metal-semiconductor contacts were first described by Braun in 1874. A physically correct explanation of unilateral conduction, as this deviation from Ohm's law was called, could not be given at that time. A prerequisite was Wilson's quantum theory of electronic semi-conductors which he published in 1931. A few years later, in 1938, Schottky finally explained the rectification at metal-semiconductor contacts by a space-

Download or read book Electronic Structure of Defects in III VI and II VI Semiconductors and Novel Yb based Intermetallics written by Zsolt Rák and published by . This book was released on 2009 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Electronic States and Formation Energies of Defect Complexes Interstitial Defects and Crystal Growth in Semiconductors written by O. F. Sankey and published by . This book was released on 1986 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant progress has been acheived on a number of areas described in our proposal. We have (1) successfully developed and applied a theory to understand the deep to shallow transition of the bandgap energy levels of large chalcogen complexes in Silicon, (2) have developed an ab-initio tight-binding-like electronic structure method for solids, (3) have made great progress in understanding the energetics of interstitial impurities in compound semiconductors, (4) have developed a theory to predict equilibrium concentrations of intrinsic and extrinsic defects in semiconducts, (5) have performed the first molecular dynamics simulations of a compound semiconductor surface, and (6) have studied the hydrogen halide molecular crystals under pressure. A brief summary of these topics will now be given.

Download or read book Defect Interaction and Clustering in Semiconductors written by Sergio Pizzini and published by Scitec Publications. This book was released on 2002 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern semiconductor devices rely upon precise defect engineering. On the one hand: defects are the components needed to generate the electronic architecture of the device. On the other hand: they may - if not carefully controlled- induce failure of that device. During the past fifty years, the electrical and optical properties of defects, their generation, transport, clustering and reactions between them have been investigated intensively. Yet the development of semiconductor technology remains closely connected to the advances made in defect science and engineering. Compared to metals, defect control in silicon is significantly complicated by the open structure of its lattice. As a result, reactions between defects, even at room temperature, have become a central issue in defect engineering.

Download or read book The Electronic Structure of Complex Systems written by P. Phariseau and published by Springer. This book was released on 2011-09-27 with total page 803 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present here the transcripts of lectures and talks which were delivered at the NATO ADVANCED STUDY INSTITUTE "Electronic Structure of Complex Systems" held at the State University of Ghent, Belgium during the period July 12-23, 1982. The aim of these lectures was to highlight some of the current progress in our understanding of the electronic structure of com plex systems. A massive leap forward is obtained in bandstructure calculations with the advent of linear methods. The bandtheory also profitted tremendously from the recent developments in the density functional theories for the properties of the interacting electron gas in the presence of an external field of ions. The means of per forming fast bandstructure calculations and the confidence in the underlying potential functions have led in the past five years or so to a wealth of investigations into the electronic properties of elemental solids and compounds. The study of the trends of the electronic structure through families of materials provided invalu able insights for the prediction of new materials. The detailed study of the electronic structure of specific solids was not neglected and our present knowledge of d- and f-metals and metal hydrides was reviewed. For those systems we also investi gated the accuracy of the one electron potentials in fine detail and we complemented this with the study of small clusters of atoms where our calculations are amenable to comparison with the frontiers of quantum chemistry calculations.

Download or read book Theory of Defects in Solids written by A. M. Stoneham and published by . This book was released on 1985 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Defects in Solids written by A. M. Stoneham and published by . This book was released on 1975 with total page 955 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text surveys the theory of defects in solids, concentrating on the electronic structure of point defects in semiconductors and insulators. The relations between different approaches are described, and predictions of theory compared with experiments.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992 with total page 1496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microscopic Identification of Electronic Defects in Semiconductors written by Noble M. Johnson and published by . This book was released on 1985 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of the Structures Binding Properties and Defects in Alkali halide Microclusters written by Charles Woolsey Scranton Conover and published by . This book was released on 1990 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1720 pages. Available in PDF, EPUB and Kindle. Book excerpt: