Division of Physical and Mathematical Sciences: Recent submissions
Now showing items 1-20 of 949
-
Exploring the Fractional Quantum Hall Effect and Electron-Electron Interactions in ABA Trilayer Graphene through Electric Fields
Since the discovery of graphene (a single sheet of carbon atoms) in 2004, the field has expanded with groundbreaking discoveries like the Quantum Hall effect, correlated phenomena, superconductivity, and ferromagnetism. ... -
Signatures of Co-existing Dual Topological Surface States in Topological Insulators using Scanning Tunneling Spectroscopy and Electrical Transport
Topological insulators host exotic metallic states on their surfaces even when the bulk is insulating. The distinctive conducting surfaces of topological insulators present a novel domain for investigating the physics of ... -
Proximity-induced superconductivity in a dual topological insulator and crossover from gapped-to-gapless Dirac surface states in a magnetic topological insulator
The combination of non-trivial topology and superconductivity is predicted to give rise to exotic Majorana fermions at the vortex core, forming a topological superconductor (TSC). TSCs, crucial for fault-tolerant quantum ... -
Effect of AGN on the ISM of their hosts: A multi-wavelength perspective
Active Galactic Nuclei (AGN) are among the high luminosity (1011 − 1014 L⊙ ) sources in the observable Universe, believed to be powered by the accretion of matter onto supermassive black holes (SMBHs; 105 − 1010 M⊙ ) at ... -
Dielectric, AC Conductivity, and EMI Shielding studies of PEDOT-PSS Nanocomposites with Carbon based Fillers
Polymer nanocomposites (PNCs) have emerged as a significant material for addressing two critical contemporary challenges: the escalating global energy demand and the pervasive electromagnetic interference (EMI) issues. The ... -
Exploring Application of Dendrimer in Energy Storage, Uranyl Extraction and Drug Delivery through Molecular Modelling
This thesis explores the potential applications of poly(amidoamine) (PAMAM) dendrimers, a class of highly branched polymers, using atomistic molecular dynamics simulations. We investigate the use of PAMAM dendrimers in ... -
Some investigations into the methods and applications of modern Feynman Integral evaluation
Feynman Integrals appear in perturbative quantum field theories and have been the focus of intensive study for over half a century. With the rise of the Standard Model of particle physics and its various extensions and the ... -
Development of Inorganic Perovskite Nanocrystals for Optoelectronic Applications
Metal Halide Perovskites (APbX3) have garnered appreciable attention from researchers because of their fascinating optoelectronic properties. These properties include high absorption coefficient, defect tolerance, long ... -
Probing Electronic States in Twisted Bilayer Graphene with Electric Fields: A study of Superconductivity, Non-Local Resistance, Magnetoresistance Hysteresis, and Thermoelectric Effects
Introducing a `twist' degree of freedom to modify the low energy band structures and engineer novel electronic phases from the constituent van der Waals 2D materials, was proposed theoretically more than a decade earlier ... -
Electrical Transport and Point Contact Spectroscopy in Core-Shell Bimetallic Nanostructures
An extensively pursued strategy for realizing new materials is the creation of interfaces between two similar or dissimilar systems, which can invoke multiple processes like electronic reconstruction, strain-induced ... -
Quantum Glass, Spin Liquids, Fragmentation, Fractional Orbitals, and Flat Band Physics in Classical and Quantum Spin Models
The world of many-body physics, encompassing both classical and quantum systems, is a breeding ground for novel phases of matter. Recent attention revolves around exotic phases characterized by fractionalized particles, ... -
Confronting realistic MHD simulations of solar eruptions with observed space based data
Solar flares and Coronal Mass Ejections (CMEs) are among the most violent and energetic phenomena observed in the solar atmosphere, resulting from the sudden release of immense amounts of energy. A typical solar flare is ... -
Quantum and classical hardware development for superconducting qubits
The journey toward realizing practical quantum computing involves overcoming critical challenges in qubit architecture, robust gate performance, and scalable control systems. This thesis addresses these challenges through ... -
Monolayer MoS2 and plasmonic heterostructure for molecular sensor
In recent years, artificially engineered materials, known as meta structures, have demonstrated tuneable optoelectronic properties, making meta-coupled devices highly advantageous for a wide range of technological applications. ... -
Information scrambling in spin glasses and entanglement transition of monitored bosons
In this thesis, I study various aspects of quantum many-body dynamics from the perspective of quantum information scrambling and entanglement dynamics in closed systems as well as systems interacting with the environment. ... -
Galactic cosmic rays from star clusters and nearby supernovae remnants
Cosmic rays (CRs) are high-energy particles, predominantly originating from outside the Earth’s atmosphere. These particles, ranging from protons to heavier nuclei, propagate through space at nearly the speed of light, ... -
Crystal Structure of an Effector Histone Methyltransferase Rv2067c from Mycobacterium tuberculosis H37Rv: Structural Insights into Context-Dependent Substrate Recognition Structure and Dynamics of a GNAT Family Protein Acetyltransferase HP0935 from a Gastric Pathogen Helicobacter pylori 26695
Methylation of histones is one of the important gene regulation mechanisms in eukaryotes. Histone methylation has a role in immune response to the invading pathogens. Pathogens implement effector proteins that evade host ... -
Proposals for probing BSM in unexplored corners of Top physics and Next-to-Minimal Supersymmetric Standard Model (NMSSM)
Despite its triumphs, the Standard Model (SM) fails to address many experimental observations and theoretical puzzles. Explanation of these necessitates postulation of new physics beyond those in the SM (BSM). The thesis ... -
The influence of temperature and bias voltage on bulk and two-dimensional bismuth sulfide for optoelectronic applications
The field of optoelectronics seeks sustainable, abundant, and cost-effective materials that can reliably perform under varying environmental conditions. Bismuth sulfide (Bi2S3), a narrow bandgap (1.3 eV) semiconductor has ... -
Design and analysis of a miniaturized Atomic Force Microscope scan head
An Atomic Force Microscope (AFM) is a type of scanning probe microscope used for nano-scale characterization, topography imaging and manipulation of conducting and insulating samples, at sub-nanometer resolution. Its ...