Browsing Division of Physical and Mathematical Sciences by thesis submitted date"1998"
Now showing items 1-15 of 15
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An Algorithm For Isolating Targeted Ions In Paul Traps
(2013-08-05) -
Effects of disorder on interacting fermionic systems in one dimension
The work begins with constructing an XXX matrix whose diagonal elements represent the momenta of a classical NNN-particle system, while off-diagonal elements are odd functions of coordinates. Summing over rows of this ... -
Electronic structure of strongly correlated Systems from Ab-initio and model Hamiltonion approaches
Strong electron–electron interactions profoundly influence the properties of systems such as transition-metal, rare-earth, and actinide-based compounds, giving rise to a variety of exotic phenomena. In recent times, there ... -
Growth and investigations of certain oxide crystals exibhiting phase transitions
A simple and efficient procedure has been devised to separate the grown YBa?Cu?O?.? crystals from the flux matrix. The extracted YBCO crystals have clear surfaces free from flux. Thermal shock and consequent cracking of ... -
Hydrogen passivation and photoconductivity in Si/Si1-xGex and Si1-xGex/Ge modulation doped heterostructures
In conclusion, we have shown for the first time that the parallel conduction and other kinds of parasitic contributions to the channel mobility can be reduced effectively by hydrogen passivation, and an enhancement in the ... -
Local structure and transport properties of chalcogenide glasses
The study o f the structure and properties o f disordered materials continues to be a topic o f interest in condensed matter physics. Glassy semiconductors, in particular, chalcogenide glasses have been important ... -
Multiscaling in three-dimensional fluid turbulence
Fluid turbulence remains one of the most fascinating unsolved problems in Physics. Different aspects of it have attracted physicists and fluid dynamicists for decades. This thesis studies multiscaling of velocity structure ... -
Non-Resonant Radiofrequency responce of the layered high-temperature superconducter Bi2Sr2CaCu2O8
In pristine Bi2212, the electromagnetic coupling determines the C44C_{44}C44? of the stack of 2D vortices as the field increases. In the presence of columnar defects, the 2D vortices in adjacent CuO bilayers are pinned ... -
Numerical and analytic studies of generalised Burgers equations
Numerical and Analytic Studies of Generalised Burgers Equations The Burgers equation ut+uux=?uxx,???>0u_t + u u_x = \delta u_{xx}, \; \delta > 0ut?+uux?=?uxx?,?>0 is a nonlinear partial differential equation representing ... -
Quasicrystals, rational approximants and quasicrystalline tilt boundaries : Theory and experiments
A range of NaBr concentrations (0.02 < X < 0.21) can be examined in an experimentally accessible (Tx - T) range, and there is good temporal stability in Tx also. The cloud point curves for different concentrations of NaBr ... -
Studies on thermal contact conductance across contacts of metal matrix composites
Thermal contact resistance plays an important role in many mechanical, aerospace, electrical, and electronic systems when heat transfer from or to the equipment is critical. Metal Matrix Composites (MMCs) are of interest ...