# Browse by Subject "Physics, Condensed Matter"

• (1968)

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• (1993)
The development of carbon doping for producing stable p-type doping profiles in MOCVD-grown GaAs has made MOCVD the preferred technique for production of highly reliable GaAs-based HBT structures. In the InP/InGaAs materials ...

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• (1990)
A dilute mixture of CCl$\sb4$ in high purity H$\sb2$ has been used as a carbon dopant source for $\rm Al\sb{x}Ga\sb{1-x}As$ grown by low pressure metalorganic chemical vapor deposition (MOCVD). To understand the mechanism ...

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• (1984)
The ('13)C Nuclear Magnetic Resonance lines, spin-lattice relaxation times T(,1) and spin-spin relaxation times T(,2) of CO chemisorbed on the surface layer of small particles of Pt metal have been observed by the method ...

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• (1993)
Density matrix formulation is used to investigate the nonlinear optical properties of semiconductor quantum-well devices. The generation of terahertz electromagnetic pulses from ultrafast optical pulse excitations of ...

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• (1989)
The diffusion of zinc in GaAs is highly anomalous in that the diffusion coefficient (D) is proportional to the zinc concentration squared in marked contrast to Fick's law which predicts that D is concentration independent. ...

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• (1991)
The routing capabilities of waveguides defined by Zn, SiO$\sb2$, and In/SiO$\sb2$ Impurity-Induced Layer Disordering (IILD) of a single GaAs quantum-well graded barrier laser structure are investigated using raised-cosine ...

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• (1987)
A detailed experimental study of the remarkable collective-transport properties of charge-density-wave (CDW) conductors is presented. Measurements of current oscillations observed in response to applied dc voltages and of ...

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• (1990)
A new and unique high vacuum crystal growth system has been developed. The gas source molecular beam/chemical beam epitaxial growth system features a 7000 l/s diffusion pumping system mounted directly beneath a molecular ...

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• (1992)
This thesis is primarily concerned with a quantitative investigation of the chemical diffusion of oxygen in YBa$\sb2$Cu$\sb3$O$\sb{\rm 6+x}$. The research also investigates the optimization of crystal growth and the ...

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• (1965)

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• (1960)

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• (1969)

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• (1993)
A comparison between (InAs)$\sb1$/(GaAs)$\sb1$ short-period-superlattice (SPS) and $\rm In\sb{0.5}Ga\sb{0.5}As$ alloy quantum-well structures grown on GaAs substrates has been made. Structural properties, photoluminescence ...

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• (1990)
The conduction noise from sliding charge-density waves (CDWs) is studied in NbSe$\sb3$ and K$\sb{0.3}$MoO$\sb3$ (blue bronze). A statistical analysis of the fluctuations in the noise is presented: the probability distributions ...

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• (1981)
We have studied the ('77)Se nuclear magnetic resonance spectra in a single crystal sample of 2H-TaSe(,2) to study the charge density wave (CDW) in this compound and to test a concept put forth by McMillan. We compare the ...

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• (1992)
In this thesis we address three problems associated with the mass flow and orbital hydrodynamics of $\sp3$He-A. The first concerns the form of the T = 0 mass current in local equilibrium; the second is a paradox associated ...

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• (1974)

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• (1977)

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• (1988)
Photoemission techniques, utilizing a synchrotron light source, were used to analyze the clean (100) surfaces of the zinc-blende semiconductor materials CdTe and InSb. Several interfacial systems involving the surfaces of ...

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