# Browse by Subject "Physics, Condensed Matter"

• (2000)
Using the Hakki-Paoli method, gain spectra at 77 and 300 K has been derived for a SILO grown GaInAs QWR Fabry-Perot laser diode. The wavelength-shift rate of the gain spectra is ∼1.4 A/°C. These temperature stabilized ...

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• (1972)

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• (2000)
We have constructed a high resolution tunnel-diode oscillator based measurement system suitable for measuring the temperature dependence of the magnetic penetration depth of superconductors, lambda(T), at very low temperatures. ...

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• (1994)
Quantized semiconductor structures are presently under investigation for their physical properties and their potential for device applications. The theoretical modeling of these structures is particularly important for ...

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• (1992)
The methods presented in this thesis were developed to study the electron propagation in nanostructures with special emphasis on semiconducting materials. The essence of nanometer-scale physics is in the phase coherence ...

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• (1989)
In this thesis physical effects due to the reduced size of semiconductor devices are investigated theoretically. Effects due to statistical fluctuations and boundary conditions at heterointerfaces are examined, specifically, ...

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• (1993)
The III-V compound semiconductor devices employing quantum well (QW) structures play an essential role in the field of optoelectronics. This thesis focuses on the quantum mechanical aspects of electron dynamics and relaxation ...

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• (1992)
The valence-band structure of a semiconductor quantum well is calculated based on the multiband effective-mass theory. A unitary transformation is found to diagonalize the six-by-six Luttinger-Kohn Hamiltonian into two ...

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• (2006)
Finally, and in a different direction, we calculate the effects of a longitudinal electrostatic perturbation on a metallic carbon nanotube to demonstrate conductance modulation. The external modulation would be screened ...

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• (1995)
We have carried out a theoretical study of surface related phenomena for three bcc transition metals: tungsten (W), molybdenum (Mo) and vanadium (V), using a newly developed atomic potential, the fourth moment method. The ...

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• (2000)
Metal-ion-exchanged zeolite catalysts (e.g., Cu-ZSM-5) are promising candidates for lean NOx automotive exhaust treatment. Despite extensive analysis, the relative importance of isolated metal ions and pairs of metal ions ...

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• (2009)
Fluctuating-charge models are computationally efficient methods of treating polarization and charge-transfer phenomena in molecular mechanics and classical molecular dynamics simulations. They are also theoretically appealing ...

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• (1989)
This thesis is a study of escape from metastable wells in one and two dimensional potentials of superconducting devices. We have measured escape rates due to both thermal activation over the barrier and macroscopic quantum ...

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• (1992)
Thermal and accelerated-ion doping, with In and Sb, during Si(001) molecular-beam epitaxy were investigated as a function of growth temperature T$\sb{\rm s}$ (500-1050$\sp\circ$C), dopant energy E$\sb{\rm d}$ (thermal-500 ...

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• (1970)

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• (1968)

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• (1965)

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• (1961)

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• (1971)

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• (1998)
The increased contribution of the fluctuation signal to the magnetization over a wide temperature range is clearly evident in the more anisotropic samples. Within the anisotropic-effective-mass 3D-XY model, the change in ...

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