# Browse by Subject "Physics, Condensed Matter"

• (1961)

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• (1990)
We have used light scattering techniques to probe the vibrational properties of GaAs/AlAs superlattices and the dynamics of electrons in GaAs/Al$\sb{\rm x}$Ga$\sb{\rm 1-x}$As multiple quantum well structures.

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• (1968)

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• (1991)
The development of visible-spectrum semiconductor lasers is of immense economic and practical importance. Because of the extremely high efficiency of semiconductor lasers, coherent visible light sources can be made with ...

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• (1990)
In these experiments, impurity-induced layer disordering (IILD) utilizing the chemical reduction of SiO$\sb2$ by Al (from high-percentage Al$\sb{\rm x}$Ga$\sb{\rm 1-x}$As) is employed to produce Si and O to effect layer ...

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• (1996)
This work reports a systematic series of in situ spectroscopic ellipsometry (SE) studies on silicon film growth by reactive magnetron sputtering of a Si target in (Ar + H$\sb2$) at low temperatures ($\le$600$\sp\circ$C). ...

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• (1993)
This thesis work has studied systems of Bi, Pb, Ag, and Hg underpotential deposition (UPD) on Au(111) electrodes. The application of the atomic force microscope (AFM), the scanning tunneling microscope (STM), and the surface ...

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• (1989)
The initial stages of interface formation between various group III, IV, and V adsorbates and the Si and Ge surfaces have been examined with high resolution angle-integrated and angle-resolved photoemission spectroscopy ...

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• (1995)
Two types of integrable semiconductor lasers are investigated in this thesis. Semiconductor ring lasers with circular and square ring resonators are analyzed, and their fabrications and laser results are described. ...

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• (1994)
Roughness at the interface between the well and barrier materials in quantum well systems has long been known to be an important factor determining carrier mobility in short period wells. Interface roughness (IR) has also ...

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• (1995)
The discovery of the exchange coupling between ferromagnetic layers separated by nonmagnetic spacer layers has stimulated a great deal of interest recently. We present a theoretical study of the interlayer coupling in ...

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• (1996)
We report optical reflectance and spectroscopic ellipsometry measurements of the in- and out-of-plane dielectric responses of chain substituted $\rm YBa\sb2Cu\sb3O\sb{6 + x}$ and $\rm YBa\sb2(Cu\sb{1 - y}Co\sb{y})\sb3O\sb{6 ... application/pdf PDF (7Mb) • (1991) The elastic softening associated with the sliding of a charge-density wave (CDW), driven by an electric field, is investigated in o-TaS$\sb3$by use of a vibrating-reed technique. Experiments performed with a dc sliding ... application/pdf PDF (4Mb) • (1989) Described in this thesis are the growth, characterization, and modeling of heterojunction bipolar transistors (HBTs). The superior high current handling capacity and high operation frequency of heterojunction bipolar ... application/pdf PDF (5Mb) • (1994) Application of compound semiconductors to electronic and optoelectronic devices offers numerous advantages over elementary semiconductors, such as the feasibility of high quality heterostructures prepared by modern crystal ... application/pdf PDF (4Mb) • (1996) Spiropyran derivatives containing a variable-length linking chain and either tri- or mono-alkoxy silane end groups were synthesized. Glass slides were deposited with mixed thin films of the spiropyran compounds and either ... application/pdf PDF (4Mb) • (1990) This work comprises studies of structural phase transitions (SPT's) in three different phases (anorthite CaAl$\sb2$Si$\sb2$O$\sb8$, Sr$\sb2$SiO$\sb4$, and AlPO$\sb4$-cristobalite) via high-resolution nuclear magnetic ... application/pdf PDF (4Mb) • (1965) application/pdf PDF (2Mb) • (1993) Described in this thesis is an investigation of some fundamental physical properties of both zincblende and wurtzite Group III - Nitride wide bandgap semiconductor materials. All of the thin films studied were grown by ... application/pdf PDF (4Mb) • (1995) We have developed a procedure for growing high-quality single crystals of YBa$\sb2$(Cu$\sb{\rm 1-x}$Co$\sb{\rm x})\sb3$O$\sb{7-\delta}.\$ By high-pressure oxygen annealing, we produced single crystals having transition ...

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