# Browse by Subject "Physics, Condensed Matter"

• (1995)
In this work, a water vapor oxidation process is used to convert high Al composition $\rm Al\sb{x}Ga\sb{1-x}As$ to a stable native oxide. The native oxides described are formed at temperatures in the range of 400$\rm\sp\circ ... application/pdf PDF (3Mb) • (1993) Data are presented on the comparison of the chemical stability of oxides of AlAs-GaAs heterostructures formed via atmospheric hydrolysis and by native oxidation at 400$\sp\circ$C for 3 h in a N$\sb2$+ H$\sb2$O vapor. Data ... application/pdf PDF (3Mb) • (1979) application/pdf PDF (15Mb) • (1996) This thesis describes NMR measurements involving carbon-13, deuterons, and protons in acetylene ($\rm C\sb2H\sb2$) adsorbed at room temperature on supported platinum catalysts. application/pdf PDF (4Mb) • (1991) The author reports the study of diffusion of carbon monoxide on supported palladium and platinum clusters by Nuclear Magnetic Resonance. As part of these studies, a novel NMR technique for studying diffusion (called an ... application/pdf PDF (3Mb) • (1996) Currently, there is a great deal of interest in metallic multilayer systems, in particular magnetic multilayer structures, for both technological and scientific reasons. Since the growth properties and band structures for ... application/pdf PDF (5Mb) • (1989) This thesis describes work done in two separate areas of the field of superconductivity. The first part describes experiments performed to measure a predicted, but previously unmeasured non-equilibrium effect in superconducting ... application/pdf PDF (3Mb) • (1995) In this thesis we study certain nonequilibrium properties of mesoscopic superconducting rings, i.e., rings of finite circumference. Two classes of nonequilibrium behavior will be considered: (i) the system is prepared in ... application/pdf PDF (5Mb) • (1980) Quite large, well-formed single crystals of m(phi)(,3)As(TCNQ)(,2) crystals have been grown. The largest of these crystals are probably the largest TCNQ salt crystals ever grown; they may also be the most perfect. application/pdf PDF (3Mb) • (1992) Structural and magnetic properties of heavy rare earth films and superlattices synthesized by molecular beam epitaxy are investigated. Epitaxial films of rare earth metals, and superlattices of rare earths with Y interlayers, ... application/pdf PDF (8Mb) • (1965) application/pdf PDF (2Mb) • (1994) This thesis contributes to the application of nuclear magnetic resonance (NMR) techniques in studying structural phase transitions (SPT's) of the SiO$\sb2$cristobalite and SiO$\sb2$and AlPO$\sb4$tridymite polymorphs. ... application/pdf PDF (5Mb) • (1990) We have used NMR to study the structure and reactions of acetylene and ethylene adsorbed on small catalyst particles. By monitoring$\sp{13}$C-$\sp{13}$C and$\sp{13}$C-$\sp1$H dipolar couplings we found the carbon-carbon ... application/pdf PDF (6Mb) • (1995) In this thesis we report$\sp1$H and$\sp{13}$C NMR measurements in the normal and superconducting states of the organic superconductor$\kappa$-(ET)$\sb2$Cu (N(CN)$\sb2$) Br (T$\sb{\rm c}$= 11.6 K). These measurements ... application/pdf PDF (7Mb) • (1992) In this thesis we report measurements of the$\sp{63}$Cu Knight shift in the superconducting state for the plane (Cu(2)) and chain (Cu(1)) sites in YBa$\sb2$Cu$\sb3$O$\sb7$. We also have measured the temperature and field ... application/pdf PDF (8Mb) • (1991) We have used NMR to study the properties of promoted catalysts prepared by adding alkali metals (Na, K, Rb, or Cs) to silica supported Pt clusters. We have also examined the effect of the alkali metals on CO and ... application/pdf PDF (4Mb) • (1989) The author has observed, and studied quantum size effects in the NMR of small, supported platinum particles with a monolayer of carbon monoxide chemically adsorbed to the surface. The effects are observed in the$\sp{13}\$C ...

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• (1992)
Numerical modeling of nonstationary transport effects using partial differential equations derived from the Boltzmann Transport Equation (BTE) is investigated. Augmented drift-diffusion (ADD) models and improved energy ...

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• (1989)
In this thesis we study three problems in phase transitions and critical phenomena.

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• (1994)
The universal behavior of insulating glasses at low temperature, compatible with but not explained by the tunnelling two level (TLS) model is reviewed. Recent non-equilibrium dielectric experiments on the capacitance of ...

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