• Dielectric studies on MgTiO3 based composite ceramics and thin films for microwave applications 

  Rabha, Susmita (2022)

  There is a growing demand for new functional materials to enhance the performance of microwave devices due to rapid development in wireless communication technology. The composite approach is one of the versatile methods ...
• Study of Magnetic and Electrical Properties of Spinel Chromites and Ferrites 

  Borah, Ritupan (2022)

  Chromium-based spinels are a potential class of magnetic materials that exhibit multiferroic, magnetodielectric and magnetostructural coupling, exchange bias, and magnetization reversal etc. The discovery of such multifunctional ...
• Novel aspects of electromagnetic radiation in isotropic and anisotropic media 

  Daloi, Nilamoni (2022)

  The kernel of the thesis is rooted in the interaction of lasers with atomic or molecular vapor. A quantitative explanation of the physics behind laser-atom interaction is given in terms of something known as "atomic ...
• Quantum dynamics of low dimensional interacting systems using the continuous-time quantum walk 

  Giri, Mrinal Kanti (2022)

  The quantum walk (QW) is the quantum analog of the classical random walk where an initial state undergoes reversible, unitary time evolution leading to a dynamical evolution of the quantum states. The study of QW has ...
• Supernova Neutrino Oscillations : Beyond Two Flavors 

  Chakraborty, Madhurima (2022)

  A core-collapse supernova (SN) explosion is one of the gigantic stellar events. It is accompanied with the release of a huge number (∼ 10^58 ) of MeV energy neutrinos which carry major portion of the total gravitational ...
• Electronic and Magnetic Structure of Few Strongly Correlated Spinel Oxides 

  Ghosh, Sayandeep (2021)

  A detailed Density Functional theory calculations and experimental studies have been reported on few novel spinel cobaltites. A substantial increase in the size of the unit cell along with the collapse of long-range ...
• Aspects of Fermi arcs and surfaces from the perspective of Gauge -Gravity Duality 

  Wahlang, Wadbor (2022)

  Despite several efforts, strongly correlated systems still pose as one of the most challenging conundrums in theoretical physics. The difficulty in modelling and solving the problems has grown even more after the discovery ...
• Asymptotic symmetry and its role in black hole thermodynamics 

  Maitra, Mousumi (2022)

  The astonishing connection between the asymptotic symmetries and the thermodynamics of the black hole was realized by the scientific communities about fourty years ago. One of the unsolved tasks in the study of the black ...
• Dynamics of reheating: towards decoding its signatures 

  Haque, Md Riajul (2022)

  The early history of our observable universe and its development are based on two major poles: cosmic inflation and big-bang nucleosynthesis (BBN). The inflation successfully creates the homogeneous, isotropic, and spatially ...
• Plasmonic and Metamaterial Based Terahertz Devices such as Sensors and Modulators 

  Dhriti, KM (2022)

  Despite considerable interest in the terahertz (THz) frequency range of the electromagnetic spectrum, the technological developments in terms of devices such as high-speed modulators and highly sensitive sensors are lagging, ...
• Soliton Steering and Switching Dynamics in P T -Symmetric Nonlinear Directional Couplers 

  Mahato, Dipti Kanika (2022)

  The dynamical behavior of a classical or quantum mechanical system is described by a Hamiltonian H. The manifestation of Hermiticity of such Hamiltonian appears in form of physical observables through experimental ...
• Growth and Functionalization of Monolayer WS2 Quantum Dots and Films for Photoluminescence Modulation and Photodetector application 

  Bora, Abhilasha (2022)

  The present thesis focuses on the top-down controlled synthesis of WS2 quantum dots (QDs) by liquid exfoliation as well as the bottom-up controlled growth of large-area monolayer WS2 by chemical vapour deposition (CVD). ...
• Influence of Cu Nano-Layer on Nonlinear Optical Response of BTO, STO and BST Thin Films Fabricated via Pulsed Laser Deposition 

  Behera, Sasmita (2022)

  The present thesis was focused on the fabrication and characterization of perovskite thin films of BaTiO3, SrTiO3, Ba1-xSrxTiO3 (0 ≤ x ≤ 1) via pulsed laser deposition (PLD) technique. The optimized substrate temperature ...
• Planar Terahertz Metamaterial Based Efficient Polarization Devices and Sensors 

  Sarkar, Rakesh (2022)

  The advent of metamaterials has made it possible to control and manipulate light at will through strong light-matter interactions at the subwavelength scale. In the last two decades, research in this area has grown rapidly ...
• Frustrated antiferromagnets and role of Dzyaloshinskii-Moriya interaction 

  Mondal, Kallol (2020)

  In this thesis, we have extensively worked on the nature of the ground state of different frustrated magnets, especially on kagome lattice and the possible magnetic long-range order state in those systems. Due to low ...
• Study of Magnetocaloric Effect in Off-stoichiometric Ni-Mn-Sb Heusler Compounds by Density Functional Theory and Monte Carlo Methods 

  Ghosh, Sheuly (2020)

  Solid-state cooling or heating using magnetocaloric materials has emerged as an energy efficient green technology. The magnetocaloric effect (MCE) describes the thermal response of a magnetic material due to the application ...
• Transport properties of 2D semi Dirac systems: Effects of spin orbit coupling and magnetic field 

  Sinha, Priyanka (2022)

  In this thesis, our work addresses the outcomes of the transport measurements in the presence of spin orbit couplings and an external magnetic field in a two dimensional (2D) semi Dirac system. Semi Dirac systems are ...
• Quantum Phases of Constrained Bosons in Low Dimensions 

  Lahiri, Sayan (2022)

  Study of quantum phase transitions in artificial systems has attracted enormous attention in recent years. In this thesis, we study the quantum phase transitions in systems of constrained bosons in low dimensional lattices. ...
• Pulsed Laser Deposited Indium Tin Oxide and its Indium-rich Composite Thin Films as Efficient Material Platforms for Probing Epsilon-near-zero Plasmon and Lossy Mode Resonance via Kretschmann-Raether Geometry 

  Goswami, Sumit (2022)

  In the present thesis work, epsilon-near-zero (ENZ) plasmon resonance and lossy mode resonance (LMR) properties of pulsed laser deposited indium tin oxide (ITO) thin films and metallic indium-rich ITO thin films are studied ...
• Development of grating array based zonal wavefront sensor for in-situ surface profiling during the growth of the thin film in a deposition system 

  Kumar, Nagendra (2022)

  In this thesis, a novel grating array based wavefront sensing (GAWS) scheme is proposed and demonstrated experimentally which can be used to measure both the thickness and surface profiles of the thin films simultaneously ...

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