About the Project
We wish to aid the experimental interpretation. Theoretically study the collective response of the various quantum phases to different perturbations. Given that the strongest response of a system arises from the collective modes of the system and that the response often tends to be very characteristic of the quantum state, it is expected that a sound knowledge of the possible collective modes of the system can inform us a great deal about the details of the nature of electronic correlation in the system. Our group has developed techniques to study the collective response of unconventional superconductors, in general, and also understand their Raman spectroscopy signature. We wish to extend such techniques to Graphene systems.
One aspect that adds a characteristic signature to the collective response of any given system is the number of quantum degrees of freedom involved. In superconductivity, this was mostly the spin of the electron. In the case of Graphene systems we have degrees of freedom corresponding to spin, sublattice, valley, and also the number of layers. These added quantum flavors are expected to make the collective excitation phase-space to be rather rich. This is what we wish to explore in this project. We will target mono-layer and bilayer graphene grown on transition metal dichalcogenides (which has a rather unique spin-orbit coupling), and the charge density wave state in Graphene and identify the collective modes of the system and the probes (like Raman scattering) that detect them.
Collective phenomena in low dimensional systems: the group of Professor Saurabh Maiti is interested in understanding the role of various quantum degrees of freedom (arising from orbital, band, valley etc) in the collective response of the system. Studying the collective response helps understand how the quantum materials respond to the experimental probes we use to study their properties. This means that everything we theoretically predict can be directly checked by experiments. This is always exciting.
The systems we are interested in are unconventional superconductors and spin-orbit coupled 2D materials. My group’s research theme is based on investigating effects of electronic correlations in various quantum phases of such materials. Our predictions have already been verified in 3 different experiments (see figure) and we look to carry this momentum forward with your help for newer quantum materials
Please contact Professor Saurabh Maiti ([Email Address Removed]) or Professor Valter Zazubovits, Graduate Program Director ([Email Address Removed]) for more information.
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