The field of condensed matter physics, which overlaps with chemistry, materials science and engineering, attempts to understand the physical properties of materials. This includes a broad range of topics including but not limited to:

•  Structural, Electronic, Dielectric, Electrical, Magnetic, and Optical Properties of Materials;
• Novel Quantum Materials – superconductors, topological insulators, Weyl semimetals and quantum spin liquids;
• Magnetoelectric and multiferroic materials;
• 2D and 3D Magnetic Systems;
• Quantum Hall Effect;
• Energetic Materials
• Semiconductors, Photovoltaics, Optoelectronics and Photonics;
• Magneto-Transports, Magnetic Interfaces and Spintronics;
• Complex Oxides and Emergent Phenomena.

Optical control of helicity-dependent photocurrent has also been studied in 3D topological insulators. Strong spin-orbit coupling and spin-momentum locking make this system unique for their applications. We observed that photocurrent can be controlled by exciting the sample with different circular and linear polarized light, yielding a polarization-dependent current density which can be fitted very well with a theoretical model. This photocurrent can also be controlled with the help of photo-thermal gradient generated by the excitation light beam. Enhancement and inversion of this photocurrent in presence of photo-thermal gradient for light incident on two opposite edges of the sample occur due to selective spin state excitation with two opposite (left and right) circularly polarized light in presence of the unique spin-momentum locked surface states. We also present efficient spin to charge conversion (SCC) in the topological insulator and ferromagnetic thin films based heterostructure by using spin-pumping technique The SCC, characterized by inverse Edelstein effect length (kIEE) in the TI material, gets altered with an intervening Copper (Cu) layer, and it depends on the interlayer thickness. The introduction of Cu layer at the interface of TI and FM metal provides a new degree of freedom for tuning the SCC efficiency of the topological surface states. The significant enhancement of the measured spin-pumping voltage and the increased linewidth of ferromagnetic resonance absorption spectra due to the insertion of Cu layer at the interface indicate a reduction in spin memory loss at the interface that resulted from the presence of exchange coupling between the surface states of TI and the local moments of FM metal.

Actinides, with their distinctive electronic configurations, play a crucial role in the advancement of quantum phenomena research and the nuclear industry, promising significant technological advancements. These elements exhibit the dual nature of 5f-states, competing interactions, and strong spin-orbit coupling, leading to complex magnetic behaviors such as multi-k antiferromagnetic ordering, multipolar ordering, and mixed valence configurations. The structural and magnetic properties of actinide systems are a focal point due to their intriguing nature. Despite the allure of their properties, research has been limited by their toxicity, radioactivity, and high reactivity. Traditionally, studies on actinide oxides have primarily focused on uranium and plutonium compounds within nuclear fuel contexts. However, the physical properties of other actinide oxides remain underexplored. This presentation will cover the synthesis methods for selected binary actinide oxides, including dioxides and sesquioxides, and provide insights into their current understanding of crystal structures. Additionally, the talk will address the challenges in unraveling the magnetic properties of these oxides, aiming to foster a deeper comprehension of their complex phenomena.