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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
The exploration of new paradigms for micro- and nanoelectronics has engendered several exciting new research fields including molecular electronics and spintronics. Two essential ingredients of the device structures are materials and...
Several organic and inorganic systems of importance for fundamental physics and applications have been studied by magnetotransport, dielectric constant, and Raman spectroscopy techniques. At the beginning of my thesis work, I...
Several models for materials of much current interest in condensed matter physics have been numerically studied, using unbiased methods, including Monte Carlo simulations and exact treatment of the fermionic trace at finite temperature....
CeIn3 belongs to a class of strongly correlated f-electron compounds that show a variety of unusual features like heavy fermion, itinerant and localized antiferromagnetism, non-Fermi liquid behavior and unconventional superconductivity....
Magnetotransport and resistance noise have been studied in high quality singlecrystals of La2Cu1−xLixO4 and La2−xSrxCuO4 with x=0.03. The detailed measurements are performed at temperatures ranging from 0.03 to 190K and in magnetic...
Three doping studies on Kondo lattices are investigated in this thesis: FeSi1-xGex, Ce1-xLaxCoIn5, and Yb1-xYxInCu4. For FeSi1-xGex, we constructed the phase diagram through the analysis of magnetic, thermal and transport measurements on...
LnBaCo2O5.5 (Ln=Gd, Eu) and Sr3Ru2O7 are examples of weakly magnetic systems of 3d and 4d transition metal oxides, respectively. The former is nonmetallic and exhibits magnetic properties of two sublattice magnetic systems with an in...
This thesis presents the results of recent investigations in the field of manganites using unbiased Monte Carlo techniques. It was found that the famous colossal magnetoresistance effect in the one-orbital model stems from the...
In this dissertation, Spin-Fermion (SF) models for diluted magnetic semiconductors and high temperature superconducting cuprates are constructed and studied with unbiased numerical techniques. A microscopic model to describe magnetically...
Organic systems provide the opportunity to study physics in lower dimensions. Rather than interactions between atomic sites, organic systems are comprised of molecules with the general shape of flat bricks. The stacking of these bricks...
We study several aspects of the behavior of strongly correlated electron systems with disorder. First we examine the influence of strong electron-electron interactions on the impurity dominated resistivity. In the weak-coupling limit, ...
Several materials have been investigated in order to study charge and spin processes in anisotropic materials, particularly in high magnetic fields. The behavior of charge carriers in graphite based material, such as bulk graphite, ...
This dissertation encompasses my major experimental work using nuclear magnetic resonance (NMR) to probe the local magnetism and spin dynamics of two interesting systems in condensed matter: density wave and frustrated spin systems....
We present the results of our numerical studies on the transport properties of strongly correlated nanostructures, particularly quantum dots and single molecules. The main focus is on correlation, interference and phononic effects....
One of the primary goals of modern condensed matter physics is to elucidate the nature of the ground state in various electronic systems. Many correlated electron materials, such as high temperature superconductors, geometrically...
SmB6 has a cubic CsCl structure consisting of Boron octahedra at the corners of the cubic structure at the Cl sites and Samarium sitting at the body center at the Cs site. Extensive measurements were carried out on high quality single...
Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
