Browsing Physics (PHY) by Title
Now showing items 167-186 of 453
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An Investigation of Electronic Phases and Charge Dynamics in Low-Dimensional System
In condensed matter physics, the concepts of topology and symmetry are of paramount importance, particularly in understanding quantum phase transitions. Topology classifies objects based on their topological properties, ... -
Investigation of inter-layer charge transfer process in optically excited graphene and transition metal dichalcogenide-based heterostructures
Light-matter interaction of two-dimensional (2D) materials and their van der Waals hybrids have gained significant interest in the past few years as they offer an intriguing platform for studying fundamental physical ... -
Investigation of Nonlinearities in Graphene Based NEMS
(2017-10-05)Nanoelectromechanical systems (NEMS) have drawn considerable attention towards several sensing applications such as force, spin, charge and mass. These devices due to their smaller size, operate at very high frequencies ... -
Investigation of Optical and Electro-optical Effects at Material Interfaces
The key questions addressed in this thesis are related to light-matter interactions at the material interfaces and are related to both plasmonic as well as Pockels effects. Plasmonics enables the design of compact photonic ... -
Investigation of quantum interference and quantum oscillations in 3D topological insulators
The investigations on the topological phase of the matter first started with the experimental discovery of the quantum Hall effect (QHE) back in 1980. The experimental discovery of the quantum spin Hall effect (QSHE) was ... -
Investigation of Structural relaxation in IV - V -VI Chalcogenide glasses for Infrared applications
Chalcogenide glasses are well known for their application in infrared transmission and sensing. These glasses are usually prepared by quenching the melt. The arrangement of atoms in the liquid state gets arrested into ... -
An Investigation Of The Ferromagnetic Insulating State Of Manganites
(2010-09-22)Electrical conductance in the ferromagnetic insulating (FMI) phase of manganites has been experimentally investigated. The investigations were performed on single crystals of compositions La0.82Ca0.18MnO3 and Nd0.7Pb0.3MnO3. ... -
Investigation of the Thermoelectric Properties of Single and Double Substituted Cu12Sb4S13 Tetrahedrite
According to the current energy consumption, out of the total energy supplied as input in various sources such as power plants, factories, automobiles, etc., only around 30% of the energy is converted to useful work. The ... -
Investigation of twisted bilayer graphene using electrical and thermoelectric transport
The ability to tune the twist angle between di erent layers of two-dimensional materials has opened up a new dimension to band engineering in van der Waals (vdW) heterostructures. By taking advantage of the formation of ... -
Investigations and Stabilization of Vortex States in Cobalt and Permalloy Nanorings in Contact with Nanowires
(2018-07-09)Magnetic nanorings are the object of increasing scientific interest because they possess the vortex (stray field free) state which ensures lower magnetostatic interactions between adjacent ring elements in high packing ... -
Investigations Of Magnetic Anisotropy In Ferromagnetic Thin Films And Its Applications
(2016-02-17)Physical systems having dimensions smaller than, or of the same order of magnitude as, the characteristic length scale relevant to a physical property are referred to as mesoscopic physical systems. Due to the dimensions ... -
Investigations of Phase Change Memory Properties of Selenium Doped GeTe and Ge2Sb2Te5
(2018-04-05)GeTe and Ge2Sb2Te5 alloys are potential candidates for non-volatile phase change random access memories (PCRAM). For electrical data storage applications the materials should have stable amorphous and crystalline phases, ... -
Investigations Of Spin-Dynamics And Steady-States Under Coherent And Relaxation Processes In Nuclear Magnetic Resonance Spectroscopy
(Indian Institute of Science, 2007-03-07)The existence of bulk magnetism in matter can be attributed to the magnetic properties of the sub-atomic particles that constitute the former. The fact that the origin of these microscopic magnetic moments cannot be related ... -
Investigations on deep-level defects in HgTe nanocrystals-based photovoltaic devices using a novel instrumentation for Deep Level Transient Spectroscopy
Colloidally produced nanocrystals (NCs) arranged in thin films hold promise for next-generation semiconductors. These NCs offer tunability in semiconductor properties due to their size, shape, composition, and surface ... -
Investigations on Photophysical Properties of Semiconductor Quantum Dots (CdxHg1-xTe,Ag2S) and their Interactions with Graphene Oxide, Organic Polymer Composites
(2018-02-07)The motivation of this thesis is to understand the physical properties of semiconductor quantum dots (QDs) and to get insight on the basic physics of charge separation in composites made from QDs with graphene oxide ... -
Investigations on structural, optical and electrical properties of lattice matching CdZnTe & HgCdTe colloidal quantum dot systems for possible core-shell structures in optoelectronic devices
In this work, alloyed II-VI group CdZnTe, HgCdTe colloidal quantum dots (QDs) have been synthesised and their optical, material, electrical properties are studied for optoelectronic applications. The bandgap of the alloyed ...