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A cavity electromechanical device for superconducting vortex charge sensing
The penetration of magnetic fields in the form of quantized vortices in type-II superconductors is well known. However, it is not well known that such vortices can be electrically charged. The effect is quite subtle and ...
Electrical transport study of Graphene/WSe2 Heterostructure
Spintronics has emerged as a novel platform to build information storage and logic devices in the last few decades. Graphene promises a long spin propagation length even at room temperature due to its low spin-orbit ...
Raman Studies of Topological Crystalline Insulator, Natural Heterostructures, Excitonic Insulator and Layered Oxide Under Pressure
The theme of this thesis is Raman spectroscopic study of a variety of exotic states of matter under extreme conditions, such as, hydrostatic pressure as high as 25 GPa and a wide temperature range from 77 K to 390 K. Raman ...
Dynamics and Transport Properties in Polymer Nanocomposites: Role of Interfacial Entropic and Enthalpic Effects
Polymers embedded with nanoparticles polymer nanocomposites (PNCs) have emerged as a new class of hybrid materials, which combine the unique electronic, mechanical, magnetic, catalytic, and optical properties of nanoparticles ...
Non-ergodicity in Interacting Quasiperiodic Systems and Disordered Fock Lattice Models
In this thesis, we study different aspects of many body localization in closed quantum systems. Many body localized systems are isolated interacting quantum systems that fail to thermalize on their own (non-ergodic) and ...
Quantum capacitance and noise measurements in van der Waals heterostructures
The discovery of graphene has revolutionized the field of condensed matter physics and opened new prospects for a wide range of other two-dimensional materials. Further with the advancement of fabrication techniques, one ...
The role of quantum fluctuations in the t-J model: Implications for cuprate superconductors
The physics of strongly correlated electron systems is among the central problems of condensed matter physics. One of the outstanding problems in this category is that of the high-Tc superconductivity obtained by doping ...
Raman Study of gated devices in two-dimensional materials and pressure effects
This thesis presents Raman study of 2D materials of contemporary interests: 2H-MoTe_2, type-II Weyl semimetal (T_d-MoTe_2), structurally anisotropic semiconductors (1T'-ReX_2 (X=S, Se)) and Mott insulator (FePS_3) under ...
Study of light-matter interactions in ultra-low noise graphene-based van der Waals hybrid
The vast array of optical and electrical capabilities of graphene (Gr) and analogous
two dimensional (2D) van der Waals (vdW) materials have piqued scientists’ interest for
long. Stacking these materials to form hybrid ...
Non-Equilibrium Phenomena in Sheared Soft Matter and Active Granular System
In this thesis, we have studied non-equilibrium phenomena in sheared soft matter systems and in granular active matter. The surfactant systems are driven out of thermal equilibrium by applying external forcing at the ...