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Study of the Effect of Ag-Addition and Double Substitution (Te/Gd and Se) on the Thermoelectric Properties of Cu12Sb4S13 Tetrahedrite
Non-renewable energy sources, such as natural gas, coal, and oil, supply over 80% of the world’s energy demands. The earth’s atmosphere is heavily polluted with CO2 generated from fossil fuels and natural gases, raising ...
Phonon anomalies in pyrochlores and 2D materials under extreme conditions: Insights from Raman spectroscopic studies
In solids, electrons do not behave as separate particles but instead interact intensely
to form quasiparticles, which couple with other quasiparticles such as phonon,
plasmon, and exciton to generate emergent quantum ...
Novel spin, charge, and lattice dynamics in pyrochlore iridates : Raman and X-ray diffraction studies at low temperatures and high pressure
This thesis investigates phonon dynamics, electronic, and spin excitations along with structural instabilities and phase transitions in rare earth pyrochlore iridates, A2Ir2O7 (A = Pr, Gd, Dy, and Er) and Bi-doped Sm2Ir2O7 ...
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 ...
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 ...
Impact of van der Waals epitaxy on structural and optoelectronic properties of layered solids
Emergence of Graphene, Transition metal dichalcogenides (TMDCs) and other van
der Waals materials promises to rede fine the building blocks of the future materials and
technologies. These materials have gained enormous ...
Twist Angle Dependent Phononic and Photoluminescence Properties of Twisted Bilayer Heterostructures
This thesis presents research work on twisted bilayer graphene (t-BLG) and twisted tungsten diselenide (t-WSe2) using various measurement techniques. Since the isolation of graphene in 2004, two-dimensional (2D) materials ...
Understanding and tailoring defects in monolayer transition metal dichalcogenides for single photon emission
Full text Embargo up to Oct 15, 2026
Point defects in monolayer (ML) transition metal dichalcogenides (TMDs) can behave as single photon emitters (SPEs). SPEs enable foundational quantum phenomena like entanglement and ...

