Group research activities

•  Quantum Phenomena in Low-Dimensional Materials - emergent quantum phenomena and collective excitations in reduced dimensions, where enhanced electronic correlations, confinement, and symmetry constraints lead to unconventional electronic phases.  

• Topological Phases and Long-Range Order in Strongly Correlated Materials!

-- What governs topological phase transitions?
Systems like magnetic topological insulators, altermagnets, and topological superconductors challenge   the Landau paradigm.  Unlike standard symmetry-breaking transitions, the critical behavior, universality classes, and fluctuation dynamics of topological transitions remain poorly understood.     

--- How do topology and symmetry breaking coexist, compete, or cooperate?

Resistance fluctuation spectroscopy provide unique experimental windows into non-equilibrium dynamics of these transitions. 

• Charge Density Wave Physics and Phase Transitions! -- fluctuation-driven melting of collective ordered states, with particular emphasis on the dynamical response and non-equilibrium behavior near phase boundaries.

• Utilization of Quantum Functionalities  for Next-Generation Devices and Sensors.

Summary:

Our research focuses on exploring emergent quantum phenomena in low-dimensional quantum materials with layered crystal structures, where reduced dimensions, strong correlations, and symmetry constraints give rise to novel quantum states of matter. A central theme of our work is understanding the interplay between electronic topology and long range order in van der Waals (vdW) quantum materials. 

We primarily investigate two major material platforms:

(a) Quasi-2D vdW ferromagnets and topological materials, which provide an ideal platform to study interplay of symmetry breaking, spin–orbit–driven band topology, and long-range magnetic order.
(b) Quasi-1D vdW materials, which host strong electronic correlations and serve as model systems for studying low-dimensional electronic instabilities.

These material families enable us to investigate critical quantum phenomena, including the formation of charge density waves (CDWs), electronically driven structural transitions, and topological phases in 1D chains. Our research places particular emphasis on the nonequilibrium and dynamical response of these collective states, offering insights into fluctuation-driven physics near phase transitions.

To facilitate our research activities, we have established a range of in-house experimental facilities, including low-frequency 1/f conductance fluctuation spectroscopy, and thermal transport measurements. Low frequency 1/f noise play a detrimental role in functionality and reliability of quantum devices and sensors. Precise characterization and optimization of device performance through detailed measurements of 1/f noise is paramount for any practical applications.